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    CHESTERTON

    Mechanical Seal GuideMetric

    ISO 9001

    CERTIFIED

    Comprehensive referencefor selecting Chestertonmechanical seals

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    Mechanical Pump Condition

    Pump Design

    Pump Dimensions

    Fluids Concentration

    Carrier Solvent

    Cleaning Fluids

    Fluid Additives

    % Solids

    Parameters Pressures

    Temperatures

    Shaft Speed

    System Batch Operation

    Continuous

    Environmental

    Controls

    Seal Selection Checklist

    The Chesterton Mechanical Seal Guide is a referencesource to help users identify standard mechanical sealrecommendations. This comprehensive guide includesproduct overviews, technical data, seal recommendations

    by fluid,environmental control plans and a technicalreference section.

    Section 1, Product Overviews, covers the key featuresof our core product line of mechanical seals andseal support systems and includes cut-away andcross-sectional views of each.

    Section 2, Mechanical Seal Technical Data,includes seal and installation dimensional data,drawings and standard specifications,including materials and operating limits.

    Section 3, Seal Recommendations by Fluid,lists over 1000 commercial fluids with respective seal

    recommendations.Seal recommendations only applyto the published fluid concentration and temperature.Due to variances in commercial and technicalrequirements,alternate compatible seal materialsare listed and can be substituted at the users discretion.

    Chesterton Mechanical Seal Guide

    DisclaimerCautionPlease Read CarefullyThis Guide is intended for use solely by fully trained CHESTERTON Specialists who are also experienced a nd familiar with the wide range of operating conditions and the wide variety o fapplications into which fluid sealing devices are or may be placed.

    This seal guide is not an operations or safety manual. Users should rely on their own training and experience in taking all precautions necessary when working around, or makingdecisions about the materials, chemicals, temperature and pressures referred to herein.Hazard Information reflects only the classifications published by European Council Directive 96/54/EC and theInternational Agency for Research on Cancer (IARC), Groups 1, 2A, or 2B.This information is provided only as one reference point and is not intended to be an exhaustive listing of all potential hazards.Likewise, the fact that there is no European Council Directive 96/54/EC or the International Agency of Research on Cancer (IARC),Groups 1, 2A, or 2B hazard reference for some materials should notbe taken to mean that there are no hazards whatsoever associated with the material.As above, for operations and safety purposes,you should rely on your own training, experience or carefulfurther inquiry.

    THE INFORMATION FURNISHED IN THIS GUIDE IS PROVIDED ON AN "AS IS" BASIS,WITHOUT ANY WARRANTIES OR PRESENTATIONS, EXPRESS OR IMPLIED, INCLUDING,BUT NOT LIMITED TO,ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE (RESPECTING EITHER THE INFORMATION OR ANY PRODUCTS LISTED IN ASSOCIATION WITH THEINFORMATION). CHESTERTON CANNOT AND DOES NOT WARRANT THE ACCURACY OR COMPELETNESS OF THE INFORMATION. CHESTERTON ASSUMES NO LIABILITY TO YOU OR ANYONE ELSEFOR ANY DECISION OR ACTION TAKEN BY YOU IN RELIANCE UPON THE INFORMATION IN THIS GUIDE.

    At ambient conditions, these materials are equallysuitable from a compatibility standpoint; but may not bethe optimum materials as recommended by Chesterton.Services that fall outside these parameters can be

    addressed by using the seal selection checklist belowand contacting Chesterton Application Engineering.

    Section 4, Environmental Control Plans,outlines the general sealing plan recommendationsand configurations.Properly choosing a seal plancan be accomplished by using the general seal planrecommendations, and can also be supplementedthrough user knowledge, customer requirements andthe assistance of Chesterton Application Engineering.

    Section 5,Technical Reference,contains usefultechnical formulas and conversion tables.

    We trust youll find this guide to be a useful

    reference tool in assisting you to apply Chestertonmechanical seal technology in the field.

    Before applying a Chesterton mechanical sealalways check the following:

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    Chesterton Mechanical Seal Guide

    Table of Contents

    Chesterton Mechanical SealGuideSection 1Product Overview180 and 280 Heavy Duty Cartridge Seals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 - 2UV Cartridge Seal and ZF Paperstock Seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 - 3

    155 and 255 Cartridge Seals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 - 4442 Split Seal and 4400 Gas Seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 - 5491 and 891 Rotary Component Seals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 - 6Stationaries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 - 7442M and 280M Mixer Seals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 - 8186HT Bellows Cartridge Seal and 886HT Rotary Bellows Seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 - 9Single and DualFlow Regulators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 - 10Barrier Fluid Tanks and SpiralTrac . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 - 11

    Section 2Mechanical Seal Technical Data180 Extra Small . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 2180 Small and Large . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 3280 Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 4UV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 6ZF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 7155 Small . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 8155 Large . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 9255 Small . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 10255 Large . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 11442 Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 124400 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 14491 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 15891 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 16Stationaries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 17442M Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 18442M Extra Large . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 19

    280M . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 20280M Jumbo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 21186HT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 22886HT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 23

    Section 3Seal Recommendations by FluidSeal Recommendation Key and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 - 2Seal Recommendations and Fluid Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 - 3

    Section 4Environmental Control PlansPlan 2 Cooling Jacket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 - 2Plan 11 Discharge Recirculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 - 2Plan 13 Suction Recirculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 - 3Plan 21 Cooled Discharge Recirculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 - 3Plan 23 Cooling with Pumping Ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 - 4Plan 32 Flush . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 - 4Plan 52 Circulation with External Buffer Fluid Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 - 5Plan 53 Circulation with Pressurized External Barrier Fluid Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 - 5Plan 53 Modified Circulation with Pressurized External Barrier Fluid Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 - 6Plan 54 with DualFlow Circulation with Pressurized External Barrier Fluid Source and DualFlow . . . . . . .4 - 6Plan 54 Circulation with Pressurized External Barrier Fluid Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 - 7Plan 62 Quench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 - 7

    Section 5Technical Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 - 2

    Mechanical

    Seal Division

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    Section 1

    Product Overview

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    Chesterton Mechanical Seal Guide

    Product Overview

    1 - 2

    180 High ReliabilitySingle Cartridge SealA heavy duty single seal for maximumreliability. Excels in tough applications.

    280 Heavy DutyDual Cartridge SealA heavy duty dual seal for greatest reliabilityin difficult applications. Ideal for heavy slurries

    and viscous fluids.

    Patented Self-Centering Lock Ring

    Multi-port injection Narrow rotating seal face Full-featured, slotted gland with floating

    throttle bushing Rugged, high torque stationary seal Monolithic, low emissions seal faces

    Micropolished, responsive seal ring Non-fretting pump/seal parts

    Cushioned high strength drives Rugged, high torque monolithic seal faces Geometric double balance Patented Self-Centering Lock Ring

    with direct centering Unified Seal Face Alignment

    Internal pumping system

    Floating flow channel Micropolished, responsive seal rings

    * Unified Seal Face Alignment and Self-Centering Lock Ringare trademarks of A.W.Chesterton Co.

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    Chesterton Mechanical Seal Guide

    Product Overview

    1 - 3

    UV Universal ValueSingle Cartridge SealMigration of advanced Chesterton technologyinto a new performance/value leader.

    ZF Zero FlushPaperstock SealDesigned to survive in the harsh, but real-lifeenvironment of paper stock pumps.

    Superior state-of-the-artcartridge single seal performance

    Compact size plus Adjustable Gland foruniversal fit within the range of process pumps

    Easy 2-step installation features auto-centering Eliminates damaging effects of fretting or

    miscentering common with low-end seals

    Hydraulically balanced design with monolithicseal faces for lasting reliable performance

    The first after-market quality sealaffordable for use in new pump service

    * Adjustable Gland is a trademark of A.W.Chesterton Co.

    Waterless performance,no need for external flush or quench

    Fits directly on common Sulzerand ABS/Scanpumps

    Micropolished o-ring surfacefor enhanced responsiveness

    Advanced SSCG seal face material

    provides lowest heat generation possible Self-cleaning action eliminates o-ring hang-up Easy and quick to repair on-site

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    1 - 4

    155 Single Cartridge SealA versatile single seal for usein a wide variety of applications.

    255 Dual Cartridge SealA general duty, dual seal for plant wide use.

    Stationary seal Self-Centering Lock Ring

    Adjustable gland tabs Monolithic seal faces Low heat generation Non-fretting pump/seal parts 360 degree flush port orientation

    Low emissions design

    Geometric double balance Self-Centering Lock Ring

    Unified Seal Face Alignment

    Internal pumping system Floating flow channel Springs isolated from fluids Large barrier fluid ports

    Monolithic seal faces* Unified Seal Face Alignment and Self-Centering Lock Ring

    are trademarks of A.W. Chesterton Co.

    Chesterton Mechanical Seal Guide

    Product Overview

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    1 - 5

    442 Split Mechanical SealA high performance split seal for universalservice.The 442 Split seal is the worldsmost popular split seal.

    Ball and socket O-rings Patented, full vacuum capability Patented, high pressure, positive drive faces Non-fretting pump and seal parts Patented, automatic centering Compact design Stationary, non-clog finger springs

    Captive fasteners Adjustable gland tabs

    4400 Gas SealA compact cartridge design that usesan in-gland control system (IGCS)to allow for easy, trouble free installation

    and maximum in-service reliability.

    Fluid sealing on the O.D. of the seal faces Fits any cross-section stuffing box No expensive external controls required Maintains nitrogen pressure regulation

    with respect to process pressure. A nitrogenpressure of 1,4 bar g greater than processpressure is always maintained.

    Easily transitions to a liquid lubricated sealand back to a non-contacting gas sealduring nitrogen supply loss

    Hydrodynamic and unique hydrostatic lift-offmakes starts and stops easy

    * IGCS is a trademark of A.W.Chesterton Co.

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    Product Overview

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    Chesterton Mechanical Seal Guide

    Product Overview

    1 - 6

    491 DINRotary Component SealHigh quality in an economical seal.Fits DIN24960 short seal chambers (L1K).

    891Rotary Component SealFits most DIN, ISO and ANSI standard pumpsfor plantwide general service sealing.

    Upgrade from single spring component seals Springs out of the fluid, non-clogging Non-fretting pump/seal parts Hydraulically balanced for low heat

    generation and long life Monolithic seal faces that stay mated under

    fluctuating pressures and temperatures

    Low emissions seal faces

    Operates at pressures up to 42 bar g Provides plant-wide, reliable general

    purpose sealing performance Springs out of the fluid, non-clogging Non-fretting pump/seal parts Hydraulically balanced for low heat

    generation and long life

    Monolithic seal faces that stay mated underfluctuating pressures and temperatures

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    1 - 7

    Chesterton Mechanical Seal Guide

    Product Overview

    VDMA Stationary Conforms to DIN24960 and

    EN12756 dimensions for seal cavities Large section o-ring provides

    self aligning features Single torque transmission

    L-Shape Stationary General purpose stationary seal Lapped both sides to fit most

    stuffing box arrangements Compression fitted for high torque capability

    due to absence of drive pins

    SASSelf Aligning Stationary Unit Self aligning design compensates for

    installation misalignments Compact design, fits 478 gland

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    1 - 8

    Chesterton Mechanical Seal Guide

    Product Overview

    442M Split Mixer SealWith its enhanced radial and axial motioncapability, the 442M is an ideal choice formixers and agitators.The 442M is a proven,

    versatile performer.

    Ball and socket O-rings Patented, full vacuum capability Patented, high pressure, positive drive faces Non-fretting pump and seal parts Patented, automatic centering Compact design Non-clog finger springs

    Captive fasteners

    280M Mixer SealThe 280M spring load is not affectedby axial shaft movement, making it an idealchoice on equipment with shaft movement.

    Narrow rotating seal faces Cushioned high strength drives Rugged,high torque monolithic seal faces Geometric double balance Patented Self-Centering Lock Ring

    with direct centering Unified Seal Face Alignment

    Internal pumping system Floating flow channel Micropolished, responsive seal rings

    * Unified Seal Face Alignment and Self-Centering Lock Ringare trademarks of A.W.Chesterton Co.

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    1 - 9

    186HT High TemperatureBellows Cartridge SealCartridge seal designed to fit standardpump bores as well as API pumps.

    Proven performancein high temperature services

    Full featured gland with flush,quench/vent and drain

    High temperature grafoil secondary seals Advanced bellows design

    for maximum cycle life

    Blister-resistant antimony carbon Heat-treated AM350 bellows core

    886HT High TemperatureRotary Bellows SealFits most DIN, ISO,ANSI and API pumps.

    Easily upgrades OEM component seals Proven performance

    in high temperature services High temperature grafoil secondary seals Advanced bellows design

    for maximum cycle life Blister-resistant antimony carbon

    Heat-treated AM350 bellows core

    Chesterton Mechanical Seal Guide

    Product Overview

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    1 - 10

    Single FlowFlush/Quench Fluid RegulatorReduce seal water consumptionaccurately and reliably.

    DualFlow

    Barrier Fluid RegulatorThe Chesterton DualFlow Meter regulatesboth pressure and flow independently

    on dual seals. Reliably sets, maintains andmonitors flow and pressure for forcedcirculated dual seal systems.

    Conical, self-cleaning indicators Chemically resistant, advanced polymer,

    Grilamid 2000LX* front panel Laser cut, non-clog regulator Standard Single Flow

    Flow Rates 0,5 2,0 liters/minPressures to 10 bar g

    Temperatures to 80C Large Single Flow

    Flow Rates 2,0 10,0 liters/minPressures to 20 bar g

    Temperature to 80C* Registered Trademark of Dynamit Nobel.

    Accurate, oil-filled pressure gauge Measures flows with +/-10% full scale Dual conical, self-cleaning indicators Available in small and large size

    configurations Temperatures to 80C Small DualFlow

    Flow Rates 0,5 1,3 liters/minPressures to 7 bar g

    Standard DualFlowFlow Rates 0,5 2,5 liters/minPressures to 10 bar g

    Large DualFlowFlow rates 2,0 10,0 liters/minPressures to 20 bar g

    Extra Large DualFlowFlow rates 5,0 30,0 liters/minPressures to 10 bar g

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    Product Overview

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    Chesterton Mechanical Seal Guide

    Product Overview

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    Barrier Fluid TanksChesterton barrier fluid tanks providemaximum security and reliability

    SpiralTrac*

    Continuously removes particulate from thestuffing box enhancing seal reliability.

    Complies with European PressureEquipment Directive, Category 1

    Independently certified ASMECode Section VIII Div. 1

    304L Construction to prevent scale Large capacity 19,0 liter tank 24 bar g from -30C to 175C

    Weld pad level gauge andheat exchanger optional

    Low level alarm connection High pressure elliptical heads Cross-flow barrier fluid connections

    Available in split and non-split construction Wide variety of configurations available

    for various stuffing box geometriesand particulates

    Non-contacting, non-wearingpatented device

    Vents air from the stuffing box prior

    to start-up* Trademark of EnviroSeal Engineering Products Ltd.

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    Section 2

    Seal Technical Data

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    Chesterton Mechanical Seal Guide

    Seal Technical Data

    2 - 2

    H

    CD

    A

    EMIN

    F

    J

    G MIN

    B MAX

    V W X

    Y

    180 EXTRA SMALL Dimensional Data/MetricA B C C D E F G MIN H J V W X Y

    MAX MIN MAX MAX MIN MAX 10 mm 12 mm 16 mm MAX

    25 104 41 51 39 6 54 73 11 41 120 126 127 033

    28 104 44 52 42 6 54 73 11 41 122 128 129 034

    30 104 46 57 44 6 54 78 11 41 123 129 130 035

    32 104 48 58 46 6 54 80 11 41 124 130 131 035

    33 113 49 59 47 6 54 81 83 14 41 125 131 132 036

    35 111 51 59 49 6 54 80 82* 14 41 126 132 133 036

    38 114 54 61 52 6 54 85 87 14 41 128 134 135 037

    40 127 56 68 54 6 54 90 92 13 41 129 135 136 038

    42 127 58 66 56 6 54 88 90 13 41 130 136 137 039

    43 127 59 69 57 6 54 91 93 13 41 131 137 138 039

    *Requires SHCS or D shaped washers.

    180 SPECIFICATIONS

    STANDARD MATERIALS

    Rotary Faces: Carbon, Sintered Silicon Carbide,

    Tungsten Carbide

    Stationary Faces : Sintered Silicon Carbide,Tungsten Carbide

    Elastomers: Fluorocarbon, EP, AFLAS standard

    Metal Components: 316SS major components Tungsten Carbide anti-rotation pins

    Springs: Alloy C-276

    Consult factory for additional materials available

    OPERATING LIMITS

    Speed Limits: 25 m/s maximum

    Temperature Limits: To 150C Ethylene Propylene To 205C Fluorocarbon,AFLAS To 260C Perfluoroelastomer

    Pressure Limits: Extra Small Sizes

    25 mm through 43 mm 40 bar g* Consult Chesterton Mechanical Seal

    Engineering for pressures above 26 bar g Small Sizes

    45 mm through 60 mm 40 bar g* Consult Chesterton Mechanical Seal

    Engineering for services beyondthese limits

    Large Sizes65 mm through 120 mm40 bar g maximum**

    Asahi Glass Company Ltd., registered trademark* Use 4 gland bolts above 26 bar g

    ** 4 gland bolts and environmental controlsrecommended over 19,5 bar g

    180 KEY

    A Shaft SizeB Maximum Gland DiameterC Stuffing Box Inside DiameterD Inboard Seal DiameterE Required Stuffing Box DepthF Outboard Seal LengthG Minimum Bolt Circle by Bolt SizeH Slot WidthJ Gland WidthV Shaft O-Ring

    W Rotary Seal O-RingX Stationary Seal O-RingY Adapter O-Ring

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    H

    CD

    A

    EMIN

    F

    J

    G MIN

    B MAX

    V W X

    Y

    180 SMALL and LARGE Dimensional Data/MetricA B C C D E F G MIN H J V W X

    MAX MIN MAX MAX MIN MAX 10 mm 12 mm 16 mm MAX

    45 139 64 73 63 18 49 95 97 13 43 133 139 140 1

    48 139 67 73 66 18 49 95* 97* 13 43 134 141 142 1

    50 139 69 78 68 18 49 100 102 13 43 136 142 143 153 152 73 87 72 18 49 109 111 115 17 43 137 144 145 1

    55 152 74 83 73 18 49 105 107 111 17 43 139 145 146 1

    58 152 80 91 78 18 49 114 116 120 17 43 140 148 149 1

    60 152 80 91 78 18 49 114 116 120 17 43 142 148 149 1

    12 mm 16 mm 20 mm

    65 164 92 103 90 22 64 127 131 17 45 231 235 236 2

    70 196 96 111 93 22 64 137 141 17 45 232 236 237 2

    75 202 102 119 100 22 64 143 147 17 45 234 238 239 2

    80 203 106 122 103 22 64 150 154 17 45 236 239 240 2

    85 211 111 128 109 22 64 152 156 161 20 45 237 241 242 2

    90 214 116 132 113 22 64 160 164 168 20 45 239 242 243 2

    95 221 121 137 119 22 64 161 165 170 20 45 240 244 245 2

    100 228 127 144 125 22 64 168 172 177 20 45 242 246 247 2110 237 137 154 134 22 64 178 182 186 20 45 245 249 250 2

    120 266 146 164 144 22 64 187 191 195 20 45 248 252 253 2

    *Requires SHCS or D shaped washers.

    Chesterton Mechanical Seal Gu

    Seal Technical D

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    G MIN

    B MAX

    H

    Chesterton Mechanical Seal Guide

    Seal Technical Data

    280 STANDARD Dimensional Data/Metric

    A B C C D E F G MIN H V W X

    MAX MIN MAX MAX MIN MAX 10 mm 12 mm 16 mm 20 mm

    25 104 44 51 44 40 54 73 11 120 126 127 1

    28 104 47 52 47 40 54 73 11 122 128 129 1

    30 104 49 56 49 40 54 78 11 123 129 130 1

    32 104 51 57 51 40 54 80 11 124 130 131 1

    33 113 52 58 52 40 54 81 83 14 125 131 132 1

    35 111 54 59 54 40 54 80 82 14 126 132 133 1

    38 114 57 61 57 40 54 85 87 14 128 134 135 1

    40 127 59 68 59 40 54 90 92 13 129 135 136 1

    43 127 62 68 62 40 54 91 93 13 131 137 138 1

    45 139 64 73 64 40 54 95 97 13 133 139 140 1

    48 139 67 73 67 40 54 96 98 13 134 141 142 1

    50 139 69 78 69 40 54 100 102 13 136 142 143 1

    55 152 74 83 74 40 54 105 107 111 17 139 145 146 1

    60 152 79 91 79 40 54 114 116 120 17 142 148 149 1

    65 164 92 100 91 52 63 127 131 17 231 235 236 1

    70 196 96 113 95 52 63 137 141 17 232 236 237 175 202 102 119 101 52 63 143 147 17 234 238 239 5-

    80 203 106 122 105 52 63 150 154 17 236 239 240 1

    85 211 111 129 110 52 63 152 156 161 21 237 241 242 1

    90 214 116 132 115 52 63 160 164 168 21 239 242 243 1

    95 221 121 138 120 52 63 161 165 170 21 240 244 245 1

    100 228 127 144 126 52 63 168 172 177 21 242 246 247 5-

    110 237 137 154 136 52 63 178 182 186 21 245 249 250 1

    120 266 146 163 145 52 63 187 191 195 21 248 252 253 5-

    E MIN F

    AD

    V W X X W

    C

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    280 KEY

    A Shaft SizeB Maximum Gland DiameterC Stuffing Box Inside Diameter

    D Seal Diameter in Stuffing BoxE Minimum Stuffing Box DepthF Outboard Seal LengthG Minimum Bolt Circle by Bolt SizeH Slot WidthV Shaft O-RingW Rotary O-RingX Stationary O-RingY Lock Ring

    280 SPECIFICATIONS

    STANDARD MATERIALS**

    Rotary Faces: Carbon, Silicon Carbide,Tungsten Carbide

    Stationary Faces: Silicon Carbide,Tungsten Carbide

    Elastomers: Fluorocarbon, AFLAS or EPR installed

    Metal Components: 316SS

    Springs: Hastelloy C*

    * Haynes International,Inc.,registered trademark** Other materials available upon request Asahi Glass Company Ltd., registered trademark

    OPERATING LIMITS

    Speed Limits: To 20 m/s

    Temperature Limits: To 150C Ethylene Propylene To 205C Fluorocarbon,AFLAS To 260C Perfluoroelastomer

    Pressure Limits: To 40 bar g inboard 17 bar g outboard

    up to 120 mm shaft size To 20 bar g inboard 13 bar g outboard

    up to 200 mm shaft size

    Minimum Barrier Fluid Pressure: 2 bar g minimum barrier fluid pressure

    recommended to properly lubricateoutboard seal

    Chesterton Mechanical Seal Guide

    Seal Technical Data

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    A B C E F MIN GMAX MAX 10 mm 12 mm 14 mm 16 mm

    A B C C D E F MIN GMAX MIN MAX MIN 10 mm 12 mm 14 mm

    Chesterton Mechanical Seal Guide

    Seal Technical Data

    2 - 6

    UV LARGE Dimensional Data/Metric

    UV KEY

    A Shaft SizeB Maximum Gland DiameterC Stuffing Box BoreD Minimum Stuffing Box DepthE Outboard Seal LengthF Minimum Bolt Circle by Bolt SizeG Hub Outside Diameter

    UV SPECIFICATIONS

    STANDARD MATERIALS

    Rotary Faces: Carbon,Tungsten Carbide,

    Graphitized Sintered Silicon Carbide (SSCG)

    Stationary Faces: Graphitized Sintered Silicon Carbide (SSCG),

    Sintered Silicon Carbide (SSC)

    Metal Components: 316SS Major components

    Springs: Alloy C-276

    OPERATING LIMITS

    Speed Limits: 25 m/s max.

    Temperature Limits:

    To 150C Ethylene Propylene To 205C Fluorocarbon,AFLAS* To 260C ChemLast

    Pressure Limits: Full vacuum to 20 bar g

    Consult Chesterton Applications Engineeringfor services beyond these limits

    *Asahi Glass Company Ltd. registered trademark

    A B C D E F MIN GMAX MAX MIN 10 mm 12 mm 14 mm 16 mm

    65 194 102 3,2 63,5 136 138 140 142 122

    70 197 105 3,2 63,5 139 141 143 145 125

    75 203 113 3,2 63,5 145 147 149 151 131

    80 210 119 3,2 63,5 152 154 156 158 134

    85 213 122 3,2 63,5 155 157 159 161 141

    90 216 125 3,2 63,5 158 160 162 164 144

    95 222 131 3,2 63,5 164 166 168 170 150

    100 229 138 3,2 63,5 171 173 175 177 157

    110 236 148 3,2 63,5 180 182 184 186 164

    120 248 158 3,2 63,5 190 192 194 196 167

    UV SMALL Dimensional Data/Metric

    38 132 69 52 87 89 91 93 76

    40 134 70 52 89 91 93 95 78

    43 134 70 52 89 91 93 95 78

    45 140 75 52 95 97 99 101 84

    50 145 80 52 100 102 104 106 89

    55 150 85 52 105 107 109 111 94

    60 160 93 52 115 117 119 121 104

    UV EXTRA SMALL Dimensional Data/Metric

    25 118 41 53 7 45 69 71 73 62

    30 124 46 58 7 45 75 77 79 68

    32 125 48 59 7 45 75 77 79 69

    33 126 49 60 7 45 75 77 79 70

    35 128 51 64 7 45 80 80 84 72

    CA CC AA

    DF

    BG

    EEED

    UV Extra Small UV Small UV Large

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    G

    C

    Chesterton Mechanical Seal Guide

    Seal Technical Data

    2 - 7

    ZF Dimensional Data/Metric

    ZF KEYA Shaft SizeB Pump Frame NumberC Maximum Gland DiameterD Stuffing Box Inside DiameterE Minimum Stuffing Box DepthF Outboard Seal LengthG Minimum Bolt Circle by Bolt SizeH Gland ThicknessV Shaft O-RingW Spring Protection O-RingX Rotary O-RingY Stationary O-Ring

    ZF SPECIFICATIONSSTANDARD MATERIALS

    Rotary/Stationary Faces: Carbon/

    Graphitized Sintered Silicon Carbide (SSCG)

    Tungsten Carbide/Graphitized Sintered Silicon Carbide (SSCG)

    Elastomers: Fluorocarbon, AFLAS* or EPR installed

    Metal Components: 316SS Major components

    Springs: Alloy C-276

    OPERATING LIMITS**

    Speed Limits: 25 m/s max.

    Temperature Limits:

    To 150C Ethylene Propylene To 205C Fluorocarbon,AFLAS

    Pressure Limits: Full vacuum to 20 bar g

    * Asahi Glass Company Ltd.registered trademark** Consult Chesterton Applications Engineering

    for services beyond these limits

    A B C D E F G MIN H V W X YMAX 10 mm 12 mm 16 mm

    35 Sulzer 1 118 60 29 34 95 20 126 028 134 225

    38 ABS Scan 1 137 96 29 34 114 20 128 029 136 226

    40 Sulzer 2 128 70 29 34 105 20 129 030 137 227

    45 Sulzer 2 128 70 29 34 105 20 133 031 141 228

    48 ABS Scan 2 147 106 30 34 124 20 134 032 142 229

    50 Sulzer 3 150 85 29 34 125 20 136 033 144 230

    55 Sulzer 3 150 85 29 34 125 20 139 034 147 232

    60 Sulzer 4 160 95 29 34 135 20 142 036 150 233

    65 Sulzer 4 160 102 38 46 135 26 231 148 236 340

    65 ABS Scan 3 173 131 38 46 150 26 231 148 236 340

    75 ABS Scan 4 183 141 38 46 160 26 234 151 239 343

    80 Sulzer 5 199 119 38 46 170 26 236 152 241 345

    85 Sulzer 5 199 122 38 46 170 26 237 153 242 346

    90 Sulzer 6 209 125 38 46 180 26 239 153 244 348

    95 Sulzer 6 209 131 38 46 180 26 240 154 245 349

    100 ABS Scan 5 213 171 38 46 190 26 242 155 247 351

    V W X Y

    F

    H

    E

    D A

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    155 SMALL Dimensional Data/Metric

    Chesterton Mechanical Seal Guide

    Seal Technical Data

    A B B C C D E F G MIN TABS G MIN 478 J

    TABS 478 MIN MAX MIN 8 mm 10 mm 12 mm 8 mm 10 mm 12 mm

    K L M N P R S T U W

    25 118 108 44 51 43 16 48 70 72 74 71 73 24

    28 118 108 47 52 46 16 48 70 72 74 71 73 24

    30 124 111 49 57 48 16 48 76 78 80 77 79 24

    32 124 114 51 58 50 16 48 77 79 81 78 80 24

    33 124 114 52 59 51 16 48 76 78 80 78 80 24

    35 128 127 54 62 52 16 48 80 82 84 86 88 24

    38 133 127 57 67 56 16 48 85 87 89 86 88 24

    40 134 127 59 68 58 16 48 86 88 90 86 88 90 24

    43 134 127 62 69 61 16 48 86 88 90 86 88 90 24

    45 140 139 64 73 63 16 48 92 94 96 92 94 96 24

    48 139 139 67 74 66 16 48 91 93 95 92 94 96 24

    50 145 139 69 78 68 16 48 97 99 101 96 98 100 24

    55 150 158 74 83 73 16 48 102 104 106 112 114 116 24

    60 160 158 79 91 78 16 48 112 114 116 113 115 117 24

    9 44 40 12 57 62 120 124 126 1/8

    9 47 40 12 57 62 121 126 128 1/8

    9 49 40 12 60 68 123 127 129 1/8

    9 51 40 12 62 69 124 128 130 1/8

    9 52 40 12 62 69 125 129 131 1/8

    9 54 40 12 70 72 126 130 132 1/8

    9 57 40 12 70 77 128 132 134 1/8

    9 59 40 12 73 78 129 134 135 1/8

    9 62 40 12 73 78 131 135 137 1/8

    9 64 40 12 79 84 132 136 138 1/8

    9 67 40 12 79 84 134 139 140 1/8

    9 69 40 12 82 89 136 140 142 1/8

    9 74 40 12 94 94 139 143 145 1/8

    9 80 40 12 99 104 142 146 148 1/8

    2 - 8

    J K

    D A

    N M

    F

    W

    UTS

    EMIN

    L P RC

    1,5 mm Spring Gap(Typical)

    B MAXG MIN

    155 SPECIFICATIONS

    STANDARD MATERIALS**

    Rotary Faces: Silicon Carbide,

    Tungsten Carbide

    Stationary Faces: Duplex Carbide, Carbon,

    Silicon Carbide,Tungsten Carbide

    Elastomers: Fluorcarbon or AFLAS installed,

    EPR included

    Metal Components: 316 SS

    Springs: Hastelloy C*

    OPERATING LIMITS

    Speed Limits To 20 m/s

    Temperature Limits: To 150C Ethylene Propylene To 205C Fluorcarbon,AFLAS To 260C Perfluoroelastomer

    Pressure Limits: To 40 bar g

    * Haynes International, Inc.,registered trademark** Other materials available upon request

    Asahi Glass Company Ltd., registered trademark

    155 KEY

    A Shaft SizeB Maximum Gland Tab DiameterC Stuffing Box Inside DiameterD Seal Diameter in Stuffing BoxE Minimum Stuffing Box DepthF Outboard Seal LengthG Minimum Bolt Circle by Bolt SizeJ Hub Gland Flange WidthK Distance from Stuffing Box Face

    to Back of TabL Lock Ring DiameterM Distance from Stuffing Box Face

    to Set ScrewsN Distance from Stuffing Box Face

    to Shaft O-RingP Gland Step DiameterR Hub Gland DiameterS Shaft O-RingT Rotary O-RingU Stationary O-RingV Gland O-Ring

    (applies only to large sizes)W NPT Size

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    65 194 92 102 90 22 64 132 134 138 27 34 89 56 17 122

    70 197 95 105 93 22 64 135 137 141 27 34 92 56 17 125

    75 203 100 113 99 22 64 141 143 147 27 34 98 56 17 13180 207 105 116 103 22 64 144 146 150 27 34 102 56 17 134

    85 213 110 122 109 22 64 151 153 157 27 34 108 56 17 141

    90 216 115 125 113 22 64 154 156 160 27 34 112 56 17 144

    95 222 120 131 118 22 64 160 162 166 27 34 117 56 17 150

    100 229 127 138 125 22 64 167 169 173 27 34 123 56 17 157

    110 236 136 148 134 22 64 174 176 180 27 34 133 56 17 164

    120 248 145 158 144 22 64 186 188 192 27 34 142 56 17 176

    231 234 236 239

    232 235 237 240

    234 237 239 242 236 238 240 243

    237 240 242 245

    239 241 243 246

    240 243 245 248

    242 245 247 250

    245 248 250 253

    248 251 253 256

    155 LARGE Dimensional Data/MetricA B C C D E F G MIN J K L M N R

    MAX MIN MAX MIN 10 mm 12 mm 16 mm

    S T U V

    K

    D A

    N M

    FE

    W

    U

    VTS

    MIN

    L RC

    2,4 mmSpring Gap(Typical)

    J

    Chesterton Mechanical Seal Gu

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    Seal Technical Data

    255 SMALL Dimensional Data/MetricA B C C D E F G MIN H W X Y Z

    MAX MIN MAX MAX MIN MAX 8 mm 10 mm 12 mm

    25 105 44 46 43 35 55 70 72 74 14 120 124 126 121

    28 105 47 49 46 35 55 73 75 77 14 121 126 128 123

    30 105 49 51 48 35 55 76 78 80 14 123 127 129 125

    32 105 51 52 50 35 55 77 79 81 14 124 128 131 126

    33 114 54 58 53 35 55 78 80 82 14 125 129 131 127

    35 111 54 59 53 35 55 80 82 84 14 126 130 132 128

    38 114 57 62 57 35 55 83 85 87 14 128 132 134 130

    40 127 59 61 58 35 55 86 88 90 14 129 134 136 131

    43 127 64 69 63 35 55 89 91 93 14 131 135 137 133

    45 140 64 66 63 35 55 93 95 97 14 132 137 139 134

    48 140 69 74 68 35 55 94 96 98 14 134 139 141 136

    50 140 69 71 68 35 55 98 100 102 14 136 140 142 137

    55 153 74 76 73 35 55 103 105 17 139 143 145 140

    60 153 79 85 79 35 55 113 115 17 142 146 148 144

    2 - 10

    DC

    EMIN F

    A

    XW Y Y X Z

    B MAX

    G MIN H

    255 SPECIFICATIONS

    STANDARD MATERIALS**

    Rotary Faces: Silicon Carbide,

    Tungsten Carbide

    Stationary Faces: Duplex Carbide, Carbon, Silicon Carbide,

    Tungsten Carbide

    Elastomers: Fluorcarbon or AFLAS installed,

    EPR included

    Metal Components: 316 SS

    Springs: Hastelloy C*

    OPERATING LIMITS

    Speed Limits To 20 m/s

    Temperature Limits: To 150C Ethylene Propylene To 205C Fluorcarbon,AFLAS To 260C Perfluoroelastomer

    Pressure Limits: To 40 bar g inboard To 14 bar g outboard

    * Haynes International, Inc.,registered trademark** Other materials available upon request

    Asahi Glass Company Ltd., registered trademark

    255 KEY

    A Shaft Size

    B Maximum Gland DiameterC Stuffing Box Inside DiameterD Seal Diameter in Stuffing BoxE Minimum Stuffing Box DepthF Outboard Seal LengthG Minimum Bolt Circle by Bolt SizeH Slot WidthW Shaft O-RingX Rotary Seal O-Ring (2)Y Stationary Seal O-Ring (2)Z Sleeve O-Ring

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    255 LARGE Dimensional Data/MetricA B C C D E F GMIN H W X Y Z

    MAX MIN MAX MAX MIN MAX 8 mm 10 mm 12 mm

    65 164 92 93 91 42 64 127 131 17 231 234 236 23

    70 196 95 105 95 42 64 137 141 17 232 235 237 23

    75 202 102 112 101 42 64 143 147 17 234 237 239 2380 203 105 115 104 42 64 147 151 17 235 238 240 23

    85 211 111 121 110 42 64 152 156 160 21 237 240 242 23

    90 214 114 124 114 42 64 156 160 164 21 238 241 243 24

    95 221 121 131 120 42 64 161 165 169 21 240 243 245 24

    100 228 127 137 126 42 64 168 172 176 21 242 245 247 24

    110 237 137 147 136 42 64 177 181 185 21 245 248 250 24

    120 266 146 156 145 42 64 187 191 195 21 248 251 253 24

    DC

    EMIN

    F

    A

    XW Y Y X Z

    B MAX

    G MIN H

    Chesterton Mechanical Seal Gu

    Seal Technical D

    255 MOTION CAPABILITIES

    Size Range mm Radial Motion* mm Axial Motion mm

    Thru 60 0,8 +/ 1,5Thru 120 1,3 +/ 1,9Thru 200 2,3 +/ 3,2*Radial movement may be increased further by enlarging the stuffing box inside diameter.

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    442 STANDARD Dimensional Data/MetricA B C C D E F G MIN H L O

    MAX MIN MAX MIN 8 mm 10 mm 12 mm 14 mm 16 mm 18 mm 20 mm 22 mm MIN MAX

    32 124,7 47,2 53,3 37,6 4,3 45,2 78,9 80,9 82,9 84,9 86,9 59,9 70,9 219

    33 124,7 47,2 53,3 37,6 4,3 45,2 78,9 80,9 82,9 84,9 86,9 59,9 70,9 220

    35 126,7 49,3 60,5 37,6 4,3 45,2 80,6 82,6 84,6 86,6 88,6 66,8 72,6 221

    38 130,3 52,3 63,5 37,6 4,3 45,2 83,9 85,9 87,9 89,9 91,9 69,9 75,9 223

    40 133,6 55,6 66,8 37,6 4,3 45,2 87,0 89,0 91,0 93,0 95,0 73,2 79,0 223

    43 136,7 58,7 70,0 37,6 4,3 45,2 90,3 92,3 94,3 96,3 98,3 76,2 82,3 224

    45 136,7 58,7 70,0 37,6 4,3 45,2 90,3 92,3 94,3 96,3 98,3 76,2 82,3 225

    48 139,7 62,0 73,2 37,6 4,3 45,2 93,3 95,3 97,3 99,3 101,3 79,5 85,3 226

    50 143,0 65,0 76,2 37,6 4,3 45,2 96,6 98,6 100,6 102,6 104,6 82,6 88,6 226

    55 146,3 68,3 79,2 37,6 4,3 45,2 99,9 101,9 103,9 105,9 107,9 85,9 91,9 228

    60 152,7 74,7 85,6 37,6 4,3 45,2 106,8 108,8 110,8 112,8 114,8 92,2 98,8 230

    65 197,1 85,1 108,0 46,7 6,6 56,9 138,5 140,5 142,5 144,5 146,5 120,7 126,5 231

    70 197,1 85,1 108,0 46,7 6,6 56,9 138,5 140,5 142,5 144,5 146,5 120,7 126,5 233

    75 203,5 91,4 114,3 46,7 6,6 56,9 144,8 146,8 148,8 150,8 152,8 127,0 132,8 234

    80 209,8 97,8 120,7 46,7 6,6 56,9 151,2 153,2 155,2 157,2 159,2 133,4 139,2 236

    85 216,2 104,1 127,0 46,7 6,6 56,9 157,5 159,5 161,5 163,5 165,5 139,7 145,5 237

    90 216,2 104,1 127,0 46,7 6,6 56,9 157,5 159,5 161,5 163,5 165,5 139,7 145,5 239

    95 222,8 110,5 133,4 46,7 6,6 56,9 163,9 165,9 167,9 169,9 171,9 146,1 151,9 241

    100 229,1 116,8 139,7 46,7 6,6 56,9 170,5 172,5 174,5 176,5 178,5 152,4 158,5 242

    110 241,8 129,5 152,4 46,7 6,6 56,9 183,2 185,2 187,2 189,2 191,2 165,1 171,2 245

    115 241,8 129,5 152,4 46,7 6,6 56,9 183,2 185,2 187,2 189,2 191,2 165,1 171,2 247

    120 248,2 135,9 158,8 46,7 6,6 56,9 189,5 191,5 193,5 195,5 197,5 171,5 177,5 248

    125 286,4 150,1 177,8 73,9 7,4 87,6 214,6 216,6 218,6 190,5 196,6 -354

    130 292,8 155,1 184,2 73,9 7,4 87,6 220,9 222,9 224,9 196,9 202,9 -355

    135 299,2 160,1 190,5 73,9 7,4 87,6 227,3 229,3 231,3 203,2 209,3 -356

    140 299,2 165,2 190,5 73,9 7,4 87,6 227,3 229,3 231,3 203,2 209,3 -358

    145 305,6 170,2 196,9 73,9 7,4 87,6 233,6 235,6 237,6 209,6 215,6 -359

    150 312,0 175,2 203,2 73,9 7,4 87,6 240,0 242,0 244,0 215,9 222,0 -361

    155 209,6 180,1 209,6 73,9 7,4 87,6 246,3 248,3 250,3 222,3 228,3 -362

    160 324,7 185,1 215,9 73,9 7,4 87,6 253,0 255,0 257,0 228,6 235,0 -363

    165 324,7 190,1 215,9 73,9 7,4 87,6 253,0 255,0 257,0 228,6 235,0 -364

    170 331,0 195,1 222,3 73,9 7,4 87,6 259,3 261,3 263,3 235,0 241,3 -364

    175 337,5 200,2 228,6 73,9 7,4 87,6 265,7 267,7 269,7 241,3 247,7 -365

    180 337,5 205,2 228,6 73,9 7,4 87,6 272,0 274,0 276,0 241,3 254,0 -366

    185 343,9 210,2 235,0 73,9 7,4 87,6 272,0 274,0 276,0 247,7 254,0 -367

    190 350,2 215,1 241,3 73,9 7,4 87,6 278,4 280,4 282,4 254,0 260,4 -368

    195 356,6 220,1 247,7 73,9 7,4 87,6 284,7 286,7 288,7 260,4 266,7 -368

    Chesterton Mechanical Seal Guide

    Seal Technical Data

    442 SPECIFICATIONS

    STANDARD MATERIALS**

    Rotary Faces: Ceramic Reaction Bonded Silicon Carbide

    Stationary Faces: Carbon Reaction Bonded Silicon Carbide

    Elastomers: AFLAS, Ethylene Propylene,

    Fluorocarbon

    Metal Components: 316SS

    Springs: Elgiloy*

    OPERATING LIMITS

    Speed Limits: To 20 m/s

    Temperature Limits: To 120C

    Pressure Limits: All 442 seals can withstand operating

    pressures from full vacuum 710 mm Hgto the maximum pressures at theconditions listed.

    Small Sizes 32 mm through 60 mmCarbon/Ceramic (3600 RPM) 24 bar gCarbon/Reaction Bonded Silicon Carbide(3600 RPM) 28 bar g

    Pressure Limits: Large Sizes 65 mm through 120 mm

    Carbon/Ceramic (1750 RPM) 14 bar gCarbon/Reaction Bonded Silicon Carbide(1750 RPM) 18 bar g

    Extra Large Sizes 125 mm through 195 mmCarbon/Ceramic (875 RPM) 14 bar gCarbon/Reaction Bonded Silicon Carbide(875 RPM) 14 bar g

    The above pressure limits are for a standard 442 seal.Higher speeds and pressures are possiblewith the use of set screws. Consult factory for higheroperating conditions

    Asahi Glass Company Ltd., registered trademark* Elgiloy is a registered trademark of

    Elgiloy Limited Partnership** Consult factory for additional materials available

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    Seal Technical Data

    442 STANDARD Dimensional Data/Metric

    2 - 13

    442 MOUNTING CONFIGURATIONS

    P NPT2 PLACES

    L

    B

    G

    C

    DF

    E

    AH

    O

    M

    N

    3 BOLTS 4 BOLTS

    442 KEY

    A Shaft Size

    B Maximum Gland DiameterC Min./Max. Stuffing Box DiameterD Gland LengthE Minimum Stuffing Box DepthF Outboard Space RequiredG Minimum Bolt Circle by Bolt SizeH Minimum Stuffing Box Face

    Outside Diameter

    SIZE M N P NPT

    up to 38 mm 13,5 2,4 .25up to 120 mm 13,5 2,4 .375up to 195 mm 26,0 4,8 .5O

    L Gland Hub Outside Diameter

    M Holder Inside Diameter from BoxN Installation DimensionO Shaft O-Ring NumberP NPT Size

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    4400 Dimensional Data/MetricA B C F G MIN H T U V W X Y

    MAX MAX MAX 10 mm 12 mm 16 mm 20 mm

    25 102 52 54 73 11 -120 -134 -024 -134 -124 -139

    28 102 52 54 76 11 -122 -136 -026 -136 -126 -141

    30 102 58 54 80 11 -123 -138 -028 -138 -128 -143

    32 111 62 54 83 85 14 -124 -140 -029 -140 -130 -145

    35 111 62 54 83 85 14 -126 -140 -029 -140 -130 -145

    38 114 67 54 86 88 14 -128 -142 -030 -142 -132 -147

    40 127 69 54 89 91 14 -129 -144 -031 -144 -134 -149

    43 139 72 54 92 94 14 -131 -146 -032 -146 -136 -150

    45 139 75 54 95 97 14 -133 -148 -033 -148 -138 -151

    48 139 82 54 101 103 14 -134 -150 -034 -150 -140 -152

    50 139 82 54 101 103 14 -136 -150 -034 -150 -140 -152

    55 152 91 54 111 113 117 18 -139 -151 -036 -152 -144 -153

    60 152 92 54 112 114 118 18 -142 -152 -037 -152 -146 -153

    65 164 103 57 123 125 129 18 -145 -153 -040 -154 -151 -155

    70 196 113 64 135 139 18 -232 -242 -151 -242 -235 -246

    75 202 119 64 141 145 18 -234 -243 -152 -243 -236 -247

    80 208 125 64 149 152 18 -236 -244 -153 -244 -237 -248

    85 211 129 64 151 155 159 21 -237 -245 -153 -245 -238 -249

    90 216 135 64 158 162 166 21 -239 -246 -154 -246 -239 -250

    2 - 14

    HG MIN

    B MAX

    C

    F

    T

    A

    VU Y W X

    Chesterton Mechanical Seal Guide

    Seal Technical Data

    4400 KEY

    A Shaft SizeB Maximum Gland DiameterC Stuffing Box Inside DiameterF Outboard Seal Length

    G Minimum Bolt Circle by Bolt SizeH Slot WidthT Shaft O-RingU Rotary Seal O-RingV Rotary Cushion O-RingW Stationary Seal O-Ring

    Outside DiameterX Stationary Seal O-Ring

    Inside DiameterY Gland Adapter O-Ring

    4400 SPECIFICATIONS

    STANDARD MATERIALS

    Rotary Faces: Sintered Silicon Carbide

    Stationary Faces:

    Carbon Consult factory for additional

    materials availability

    Elastomers: Fluorocarbon, EPR,

    ChemLast,AFLAS*

    Metal Components: 316SS

    Springs: Hastelloy C

    Other materials available throughChesterton Engineering Solutions

    OPERATING LIMITS

    Speed Limits: 25 m/s max.,1,3 m/s min. Contact Chesterton application

    engineering regarding applicationsexceeding these limits

    Temperature Limits: 260C max. (Elastomers)

    Pressure Limits: 25 mm to 65 mm 20 bar g 70 mm to 90 mm 17 bar g

    TwinHybrid and Self-Centering Lock Ringare trademarks of A.W.Chesterton Company

    * Asahi Glass Company Ltd.,registered trademark Haynes International,Inc.,registered trademark

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    EDAC

    F

    G H

    K

    JL

    B

    491 Dimensional Data/Metric

    2 - 15

    Chesterton Mechanical Seal Guide

    Seal Technical Data

    491 SPECIFICATIONSSTANDARD MATERIALS

    Seal Faces Available: Carbon rotary face 99.7% Ceramic or Sintered Silicon

    Carbide stationary seat

    Elastomers: Ethylene Propylene Fluorocarbon

    Metal Components: 316SS Rotary holder

    Springs: Hastelloy C*

    OPERATING LIMITS

    Speed Limits: Surface speed to 10 m/s Rotational speed to 3600 RPM

    Temperature Limits:

    To 180C

    Pressure Limits: To 10 bar g

    * Haynes International,Inc., registered trademark

    A B C D E F G H J K L

    16 28,9 31 23 27 35,0 30 5,0 1,5 4 M4

    18 32,3 34 27 33 37,5 30 7,5 2,0 5 M4

    20 34,3 36 29 35 37,5 30 7,5 2,0 5 M4

    22 36,3 38 31 37 37,5 30 7,5 2,0 5 M4

    24 38,4 40 33 39 37,5 30 7,5 2,0 5 M4

    25 39,3 41 34 40 37,5 30 7,5 2,0 5 M4

    28 42,3 44 37 43 42,5 35 7,5 2,0 5 M5

    30 44,3 46 39 45 42,5 35 7,5 2,0 5 M5

    32 46,4 48 42 48 42,5 35 7,5 2,0 5 M5

    33 48,0 49 42 48 42,5 35 7,5 2,0 5 M5

    35 49,5 51 44 50 42,5 35 7,5 2,0 5 M5

    38 54,3 58 49 56 44,0 35 9,0 2,0 6 M5

    40 56,1 60 51 58 44,0 35 9,0 2,0 6 M5

    43 59,1 63 54 61 44,0 35 9,0 2,0 6 M5

    45 61,1 65 56 63 44,0 35 9,0 2,0 6 M5

    48 64,2 68 59 66 44,0 35 9,0 2,0 6 M5

    50 66,1 70 62 70 44,5 35 9,5 2,5 6 M5

    53 69,1 73 65 73 46,0 35 11,0 2,5 6 M5

    55 71,1 75 67 75 46,0 35 11,0 2,5 6 M5

    60 76,1 85 72 80 46,0 35 11,0 2,5 6 M5

    65 81,1 90 77 85 46,0 35 11,0 2,5 6 M5

    68 86,1 93 81 90 46,3 35 11,3 2,5 7 M5

    70 86,1 95 83 92 46,3 35 11,3 2,5 7 M5

    75 98,6 104 88 97 59,3 48 11,3 2,5 7 M6

    80 104,2 109 95 105 60,0 48 12,0 3,0 7 M6

    85 108,1 114 100 110 60,0 48 12,0 3,0 7 M6

    90 114,0 119 105 115 62,0 48 14,0 3,0 7 M6

    100 117,6 129 115 125 62,0 48 14,0 3,0 7 M6

    110 133,5 139 125 135 62,0 48 14,0 3,0 7 M6

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    Chesterton Mechanical Seal Guide

    Seal Technical Data

    891 Dimensional Data/MetricA C D E F

    16 30,45 35,00 115 120

    18 32,28 35,00 116 121

    20 34,29 35,00 117 12222 36,30 35,00 118 123

    24 38,30 35,00 119 125

    25 39,29 35,00 120 125

    28 42,29 35,00 122 127

    30 44,30 35,00 123 128

    32 46,30 44,45 124 130

    33 47,90 44,45 125 131

    35 49,48 44,45 126 132

    38 54,28 44,45 128 134

    40 56,08 44,45 129 135

    43 59,08 44,45 131 137

    45 61,09 44,45 133 139

    48 64,11 44,45 134 14150 66,09 44,45 136 142

    55 71,07 44,45 139 145

    60 77,14 44,45 142 148

    65 83,01 44,45 145 151

    70 86,08 44,45 148 152

    75 98,43 50,80 234 238

    80 104,78 50,80 236 240

    A C D E F

    85 107,95 50,80 237 241

    90 114,30 50,80 239 243

    95 117,48 50,80 240 244100 123,83 50,80 242 246

    110 133,35 50,80 246 249

    120 152,40 92,07 351 356

    125 158,75 92,07 353 358

    130 165,10 92,07 354 360

    135 171,45 92,07 356 362

    140 171,45 92,07 357 362

    145 177,80 92,07 359 363

    150 184,15 92,07 361 364

    155 190,50 92,07 361 365

    160 196,85 92,07 363 366

    165 196,85 92,07 363 366

    170 203,20 92,07 364 367175 209,55 92,07 365 368

    180 215,90 92,07 366 369

    185 215,90 92,07 366 369

    190 222,25 92,07 367 370

    195 228,60 92,07 368 371

    200 234,95 92,07 369 372

    891 KEY

    A Shaft SizeC Outer DiameterD Operating LengthE Static O-RingF Dynamic O-Ring

    891 SPECIFICATIONS

    STANDARD MATERIALS

    Seal Faces Available: Grade P658RC Carbon Reaction Bonded Silicon Carbide Solid Tungsten Carbide

    Elastomers: Fluoroelastomer installed Ethylene Propylene supplied as spare ChemLast available upon request

    Metal Components: 316SS

    Available in Alloy, Alloy 20,Titanium,Monel**, Nickel or Hastelloy B* or C*

    Springs: Hastelloy C*

    OPERATING LIMITS

    Temperature Limits: To 205C with Fluoroelastomer To 150C with Ethylene Propylene 15C to 260C with ChemLast

    Pressure Limits: 711 mm Hg vacuum to 42 bar g

    depending on shaft size and speed Sizes 18 mm to 30 mm limited to 21 bar g max. Sizes 40 mm to 110 mm limited to 42 bar g max. Sizes 120 mm to 200 mm limited to 28 bar g max.

    * Haynes International,Inc., registered trademark** Inco family of companies registered trademark

    E F

    C

    D

    A

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    SHAFT A B C O-RING D ESIZE

    18 32,6 6,5 17,0 26,58 x 3,53 33 26,5

    20 34,6 6,5 17,0 28,17 x 3,53 35 28,5

    22 36,6 6,5 17,0 29,74 x 3,53 37 30,5

    24 38,6 6,5 17,0 31,94 x 3,53 39 32,5

    25 39,6 6,5 17,0 32,92 x 3,53 40 33,5

    28 42,6 6,5 17,0 36,09 x 3,53 43 36,5

    30 44,6 6,5 17,0 37,69 x 3,53 45 38,5

    32 47,6 6,5 17,0 40,87 x 3,53 48 41,5

    33 47,6 6,5 17,0 40,87 x 3,53 48 41,5

    35 49,6 6,5 17,0 44,04 x 3,53 50 43,5

    38 55,6 7,0 18,0 48,00 x 4,00 56 48,5

    40 57,6 7,0 18,0 50,00 x 4,00 58 50,5

    43 60,6 7,0 18,0 52,00 x 4,00 61 53,5

    45 62,6 7,0 18,0 55,00 x 4,00 63 55,5

    48 65,6 7,0 18,0 58,00 x 4,00 66 58,5

    50 69,6 8,5 20,0 60,00 x 4,50 70 61,5

    55 74,6 8,5 20,0 65,00 x 4,50 75 66,5

    60 79,5 8,5 20,0 70,00 x 4,50 80 71,5

    65 85,4 8,5 20,0 75,00 x 4,50 85 76,5

    70 91,4 10,0 22,0 82,00 x 5,00 92 82,5

    75 96,4 10,0 22,0 87,00 x 5,00 97 87,5

    80 104,3 10,0 22,5 95,00 x 5,50 105 94,5

    85 109,3 10,0 22,5 100,00 x 5,50 110 99,5

    90 114,3 10,0 22,5 105,00 x 5,50 115 104,5

    95 119,3 10,0 22,5 110,00 x 5,50 120 109,5

    100 124,3 10,0 22,5 115,00 x 5,50 125 114,5

    110 134,3 10,0 22,5 120,00 x 5,50 135 124,5

    SHAFT A B C D O-RINGSIZE

    25 40,0 6,4 53,2 16 125

    28 43,0 6,4 56,4 16 127

    30 45,0 6,4 59,5 16 128

    32 47,2 6,4 59,4 16 130

    33 48,0 6,4 59,5 16 131

    35 50,4 6,4 61,2 16 132

    38 56,8 6,4 69,1 16 134

    40 59,0 6,4 72,2 16 135

    42 61,0 6,4 72,2 16 137

    43 62,0 6,4 78,6 16 137

    45 64,0 6,4 78,6 16 139

    48 67,0 6,4 81,8 16 141

    50 69,0 6,4 81,8 16 142

    53 72,0 6,4 88,1 16 144

    55 74,0 6,4 94,5 16 145

    60 77,4 6,4 98,4 16 148

    65 85,3 6,4 107,2 16 151

    70 87,3 6,4 111,1 25,4 235

    75 93,6 6,4 115,8 25,4 237

    80 100,0 6,4 123,8 25,4 239

    85 103,2 6,4 127,0 25,4 240

    90 109,5 6,4 130,1 25,4 242

    95 112,7 6,4 136,5 25,4 243

    100 119,0 6,4 142,9 25,4 245

    110 131,7 6,4 155,6 25,4 249

    SHAFT A B C DSIZE

    18 33,9 6,6 46,0 17

    20 35,9 6,6 48,0 17

    22 37,9 6,6 50,0 17

    24 39,9 6,6 53,2 17

    25 40,9 6,6 53,2 17

    28 43,9 6,6 56,4 17

    30 45,9 6,6 59,5 17

    32 47,9 6,6 59,5 17

    33 48,9 6.6 59,5 17

    35 50,9 6,6 61,1 17

    38 57,9 6,6 68,9 17

    40 59,9 6,6 72,1 17

    42 61,9 6,6 72,1 17

    43 62,9 6,6 78,5 17

    45 64,9 6,6 78,5 17

    48 67,9 6,6 81,6 17

    50 69,9 6,6 81,6 17

    53 72,9 6,6 88,0 17

    55 74,9 6,6 94,3 17

    60 84,9 6,6 98,2 20

    65 89,9 6,6 106,9 20

    70 94,9 6,6 110,7 25

    75 103,9 6,6 115,5 25

    80 108,9 6,6 123,4 25

    85 113,9 6,6 125,5 25

    90 118,9 6,6 133,0 25

    95 120,9 6,6 136,1 25

    100 128,9 6,6 142,5 25

    110 138,9 6,6 155,2 25

    VDMA Stationary

    SAS Self Aligning Stationary Unit

    L-SHAPE Stationary

    Chesterton Mechanical Seal Guide

    Seal Technical Data

    2 - 17

    CC

    C

    E

    5

    5,5

    B

    B

    B

    D

    D

    D

    A

    A

    A

    SAS Stationary

    L-Shaped Stationary

    VDMA Stationary

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    442 MIXER STANDARD Dimensional Data/Metric Shaft Sizes: 38 mm to 120 mmA B C C D E F G MIN H M N O

    MAX MIN MAX MIN 8 mm 10 mm 12 mm 14 mm 16 mm 18 mm MIN

    38 134,1 53,6 67,4 37,6 4,3 45,2 90,6 92,6 94,6 73,8 13,5 2,4 223

    40 137,3 56,8 70,2 37,6 4,3 45,2 93,0 95,0 97,0 76,2 13,5 2,4 223

    43 140,5 60,0 73,4 37,6 4,3 45,2 96,1 98,1 100,1 79,2 13,5 2,4 224

    45 140,5 60,0 73,4 37,6 4,3 45,2 96,1 98,1 100,1 79,2 13,5 2,4 225

    48 143,6 63,1 76,6 37,6 4,3 45,2 99,4 101,4 103,4 82,6 13,5 2,4 226

    50 146,8 66,3 80,3 37,6 4,3 45,2 104,5 106,5 108,5 110,5 86,4 13,5 2,4 226

    55 150,0 69,5 83,3 37,6 4,3 45,2 107,8 109,8 111,8 113,8 89,7 13,5 2,4 228

    60 156,3 75,8 94,1 37,6 4,3 45,2 119,7 121,7 123,7 125,7 101,6 13,5 2,4 230

    65 204,1 87.9 115,1 46,7 6,6 56,9 145,9 147,9 149,9 151,9 127,8 13,5 2,4 231

    70 204,1 87,9 115,1 46,7 6,6 56,9 145,9 147,9 149,9 151,9 127,8 13,5 2,4 233

    75 210,4 94,2 121,4 46,7 6,6 56,9 152,2 154,2 156,2 158,2 134,1 13,5 2,4 234

    80 216,8 100,6 127,8 46,7 6,6 56,9 157,6 159,6 161,6 163,6 165,6 167,6 140,5 13,5 2,4 236

    85 223,1 106,9 134,1 46,7 6,6 56,9 164.0 166,0 168,0 170,0 172,0 174,0 146,8 13,5 2,4 237

    90 223,1 106,9 134,1 46,7 6,6 56,9 164,0 166,0 168,0 170,0 172,0 174,0 146,8 13,5 2,4 239

    95 229,5 113,3 140,5 46,7 6,6 56,9 170,3 172,3 174,3 176,3 178,3 180,3 153,2 13,5 2,4 241

    100 235,8 119,6 146,8 46,7 6,6 56,9 176,7 178,7 180,7 182,7 184,7 186,7 159,5 13,5 2,4 242

    110 248,5 132,3 159,5 46,7 6,6 56,9 189,4 191,4 193,4 195,4 197,4 199,4 172,2 13,5 2,4 245

    115 248,5 132,3 159,5 46,7 6,6 56,9 189,4 191,4 193,4 195,4 197,4 199,4 172,2 13,5 2,4 247

    120 254,9 138,7 159,5 46,7 6,6 56,9 189,4 191,4 193,4 195,4 197,4 199,4 172,2 13,5 2,4 248

    2 - 18

    G

    45

    90

    C

    D

    F

    E

    A

    M

    H

    O

    N

    B

    3/8 NPT2 PLACES

    Chesterton Mechanical Seal Guide

    Seal Technical Data

    442M KEY

    A Shaft SizeB Maximum Gland DiameterC Min./Max. Stuffing Box DiameterD Gland LengthE Minimum Stuffing Box DepthF Outboard Space RequiredG Minimum Bolt Circle by Bolt SizeH Minimum Stuffing Box Face

    Outside DiameterL Gland Hub Outside DiameterM Holder Inside Diameter from BoxN Installation DimensionO Shaft O-Ring Number

    442M SPECIFICATIONS

    STANDARD MATERIALS

    Rotary Faces: Carbon, Reaction Bonded Silicon Carbide

    Stationary Faces: Reaction Bonded Silicon Carbide

    Elastomers: AFLAS, Ethylene Propylene,

    Fluorocarbon

    Metal Components:** 316SS

    Springs: Elgiloy*

    OPERATING LIMITS

    Speed Limits: To 20 m/s

    Temperature Limits: To 120C

    Pressure Limits: To 15 bar g

    * Elgiloy is a registered trademark ofElgiloy Limited Partnership

    ** Consult factory for additional materials available Asahi Glass Company Ltd., registered trademark

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    442 MIXER RADIAL MOTION VS. PRESSURE CAPABILITY

    Pressure Operating Limits at Maximum Shaft Runout

    Chesterton Mechanical Seal Guide

    Seal Technical Data

    442 MIXER EXTRA LARGE Dimensional Data/Metric Shaft Sizes: 125 mm to 190 mmA B C C D E F G MIN H L M N O

    MAX MIN MAX MIN 18 mm 20 mm 22 mm MIN MAX

    125 292,8 153,7 181,6 73,9 7,4 87,6 221,4 223,4 225,4 196,9 202,9 26,2 4,8 354

    130 299,2 156,8 188,0 73,9 7,4 87,6 227,8 229,8 231,8 203,2 209,3 26,2 4,8 355

    135 305,6 163,2 194,3 73,9 7,4 87,6 234,1 236,1 238,1 209,6 215,7 26,2 4,8 356

    140 305,6 166,4 194,3 73,9 7,4 87,6 234,1 236,1 238,1 209,6 215,7 26,2 4,8 358

    145 312,0 172,7 200,7 73,9 7,4 87,6 240,5 242,5 244,5 215,9 222,1 26,2 4,8 359

    150 318,3 179,1 207,0 73,9 7,4 87,6 246,8 248,8 250,8 222,3 228,4 26,2 4,8 361

    155 324,7 182,2 213,4 73,9 7,4 87,6 253,2 255,2 257,2 228,6 234,8 26,2 4,8 362

    160 331,1 188,6 219,7 73,9 7,4 87,6 259,5 261,5 263,5 235,0 241,2 26,2 4,8 363

    165 331,1 191,8 219,7 73,9 7,4 87,6 259,5 261,5 263,5 235,0 241,2 26,2 4,8 364

    170 337,5 198,1 226,1 73,9 7,4 87,6 265,9 267,9 269,9 241,3 247,6 26,2 4,8 364

    175 343,9 201,3 232,4 73,9 7,4 87,6 272,2 274,2 276,2 247,7 254,0 26,2 4,8 365

    180 350,2 207,6 238,8 73,9 7,4 87,6 278,6 280,6 282,6 254,0 260,4 26,2 4,8 366

    185 350,2 210,8 238,8 73,9 7,4 87,6 278,6 280,6 282,6 254,0 260,4 26,2 4,8 367

    190 356,6 217,2 245,1 73,9 7,4 87,6 284,9 286,9 288,9 260,4 266,8 26,2 4,8 368

    2 - 19

    C

    O

    D

    F

    E

    A

    GL

    B

    10

    27

    1/2 NPT2 PLACES

    H

    M

    N

    442 MIXER Small (38 mm to 60 mm)

    Pressure (bar g) TIR (mm)14 0,7610 1,58,5 2,3

    442 MIXER Large (65 mm to 120 mm)

    Pressure (bar g) TIR (mm)10 1,38,5 2,55,5 3,8

    442 MIXER Extra Large (125 mm to 190 mm)

    Pressure (bar g) TIR (mm)10 2,08,5 3,05,5 3,8

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    280 MIXER Dimensional Data/MetricA B C C D E F G MIN H V W X Y

    MAX MIN MAX MAX MIN MAX 8 mm 10 mm 12 mm

    35 114 60 62 56 40 54 85 88 14 126 134 135 13

    38 127 63 68 59 40 54 90 93 14 128 136 137 13

    60 165 86 97 82 40 54 118 121 124 17 142 150 151 1412 mm 16 mm 20 mm

    65 199 102 116 98 52 63 140 143 17 231 237 238 15

    70 202 108 119 101 52 63 144 147 17 232 238 239 15

    75 208 114 125 107 52 63 151 154 17 234 240 241 15

    80 211 117 129 110 52 63 153 156 159 21 235 241 242 15

    85 216 124 135 117 52 63 160 164 167 21 237 243 244 15

    90 225 130 141 123 52 63 166 169 172 21 239 245 246 15

    95 228 133 144 126 52 63 169 172 176 21 240 246 247 15

    100 228 140 151 132 52 63 176 179 182 21 242 248 249 15

    110 241 149 160 142 52 63 185 188 191 21 245 251 252 15

    20 mm 24 mm 30 mm

    120 279 171 162 83 104 227 230 236 351 359 361 25

    130 292 184 175 83 104 239 242 248 355 362 363 25140 298 191 181 83 104 246 249 255 357 363 364 25

    150 311 203 194 83 104 258 261 267 361 365 366 26

    160 323 216 207 83 104 271 274 280 363 367 368 26

    170 330 222 213 83 104 277 280 286 364 368 369 26

    180 342 235 226 83 104 290 293 299 366 370 371 26

    190 349 241 232 83 104 296 299 305 367 371 372 26

    200 361 254 245 83 104 309 312 318 369 373 374 26

    Chesterton Mechanical Seal Guide

    Seal Technical Data

    280M KEYA Shaft SizeB Maximum Gland DiameterC Stuffing Box Inside DiameterD Seal Diameter in Stuffing BoxE Minimum Stuffing Box DepthF Outboard Seal LengthG Minimum Bolt Circle by Bolt SizeH Slot WidthV Shaft O-RingW Rotary O-RingX Stationary O-RingY Lock Ring

    280 MIXER SPECIFICATIONSSTANDARD MATERIALS

    Rotary Faces: Carbon, Silicon Carbide, Tungsten Carbide

    Stationary Faces: Silicon Carbide,Tungsten Carbide

    Elastomers: Fluorocarbon,AFLAS or EPR installed

    Metal Components: 316SS

    Springs: Hastelloy C*

    *Haynes International, Inc., registered trademark** Other materials available upon request

    Asahi Glass Company Ltd.,registered trademark

    OPERATING LIMITS

    Speed Limits: To 20 m/s

    Temperature Limits: To 150C Ethylene Propylene To 205C Fluorocarbon,AFLAS To 260C ChemLast

    Pressure Limits: To 40 bar g inboard 17 bar g outboard

    up to 120 mm shaft size To 20 bar g inboard 13 bar g outboard

    up to 200 mm shaft size

    Minimum Barrier Fluid Pressure: 2 bar g minimum barrier fluid pressure

    recommended to properly lubricateoutboard seal

    E MIN F

    AD

    V W X X W Y

    C

    G MIN

    B MAX

    H

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    2 - 21

    A B C D E F G MIN V W X YMAX MIN MAX MIN MAX 20 mm 24 mm 30 mm

    210 457 292 280 109 145 368 372 378 446 449 450 374

    220 470 305 292 109 145 381 385 391 447 450 451 376

    230 470 305 292 109 145 381 385 391 447 450 451 376

    240 483 318 305 109 145 394 398 404 448 451 452 378

    250 496 330 318 109 145 406 410 417 449 452 453 379

    260 508 343 330 109 145 419 423 429 450 453 454 380

    270 521 356 343 109 145 432 436 442 451 454 455 381

    280 521 356 343 109 145 432 436 442 451 454 455 381

    290 534 368 356 109 145 445 449 455 452 455 456 5-902

    300 546 381 369 109 145 457 461 467 453 456 457 382

    280 MIXER JUMBO Dimensional Data/Metric

    Chesterton Mechanical Seal Guide

    Seal Technical Data

    280 MIXER MOTION CAPABILITIES

    Size Range mm Radial Motion* mm Axial Motion mm

    Thru 60 0,8 +/ 1,5Thru 110 1,3 +/ 1,9

    Thru 200 2,3 +/ 3,2Thru 60 0,8 +/ 1,5Thru 110 4,8 +/ 1,9Thru 200 6,4 +/ 3,2

    *Radial movement may be increased further by enlarging the stuffing box inside diameter.

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    186HT STANDARD Dimensional Data/Metric

    2 - 22

    Chesterton Mechanical Seal Guide

    Seal Technical Data

    186HT KEY

    A Shaft SizeB Gland Outside DiameterC Stuffing Box BoreCa* API Box BoreD IB Seal DiameterE Stuffing Box DepthF Outboard Seal LengthFa** API Outboard Seal LengthG Minimum Bolt Circle by Bolt SizeH Slot WidthJ Gland WidthK NPT

    * Minimum Bore Diameter Ca for ID Pilot** OB Length Fa with Pilot design and metallic face gasket

    186HT SPECIFICATIONS

    STANDARD MATERIALS

    Rotary Faces: Blister-resistant Carbon,Tungsten Carbide

    Stationary Faces: Sintered Silicon Carbide

    Metal Components: 316SS

    Bellows: AM350 heat-treated 718 Inconel heat-treated (corrosive services)

    End Fittings: Low expansion alloy 42

    Secondary Seals Grafoil packing

    OPERATING LIMITS

    Speed Limits: To 20 m/s

    Temperature Limits: 73C to 427C

    A B C Ca* D E F Fa** G H J K MAX MIN MIN MAX MIN MAX MAX 10 mm 12 mm 16 mm MAX MAX

    25 108 48 54 46 42 49 52 76 78 13 32 3/8

    30 108 51 57 49 42 49 52 79 82 13 32 3/8

    32 114 57 60 55 43 49 52 81 99 13 32 3/8

    35 121 60 67 58 43 50 54 89 92 14 34 3/8

    38 133 64 70 61 43 50 54 92 95 14 34 1/2

    40 140 67 73 65 43 50 54 95 98 14 34 1/2

    42 140 67 73 65 43 50 54 95 98 14 34 1/2

    45 146 70 76 68 43 50 54 98 101 14 34 1/2

    50 159 76 80 74 46 52 55 108 111 114 18 35 1/2

    55 159 79 89 77 46 52 55 111 114 117 18 35 1/2

    60 165 86 92 84 46 54 57 114 117 120 18 37 1/2

    65 165 89 95 87 46 54 57 117 120 123 18 37 1/2

    BJ

    G

    FE

    D

    C

    Ca

    Fa

    A

    H

    186HT Standard ANSI

    186HT API

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    J

    G

    F

    L

    E

    B

    D

    K

    A

    M

    H

    C

    A

    3/32 PIN

    15

    886HT KEY

    A Shaft SizeB Outside DiameterC Operating LengthD Screw Head ProtrusionE Stationary Bore DiameterF Stationary LengthG Cavity Step DiameterH Cavity DepthJ Bore DepthK Cavity Step DepthL Nose LengthM Pin Extrusion

    886HT SPECIFICATIONS

    STANDARD MATERIALS

    Rotary Faces: Blister-resistant Carbon,Tungsten Carbide

    Stationary Faces: Sintered Silicon Carbide

    Metal Components: 316SS

    Bellows: AM350 heat-treated 718 Inconel heat-treated (corrosive services)

    End Fittings: Low expansion alloy 42

    Secondary Seals Grafoil packing

    OPERATING LIMITS

    Speed Limits: To 20 m/s

    Temperature Limits: 73C to 427C

    A B C D

    25 39,7 42,8 3,2

    28 42,8 39,7 3,2

    30 46,0 42,8 3,2

    32 46,0 42,8 3,2

    35 49,2 44,5 3,2

    38 55,1 44,5 4,2

    40 58,3 44,5 4,2

    42 61,5 44,5 4,2

    45 62,3 44,5 4,2

    48 64,6 44,5 4,2

    50 67,8 44,5 4,2

    55 74,2 47,6 4,2

    60 77,3 47,6 4,2

    65 84,1 47,6 4,2

    A E F G H J K L M

    25 41,2 11,1 35,1 14,0 9,9 6,1 6,6 3,1

    28 44,4 11,1 38,3 14,0 9,9 6,1 6,6 3,1

    30 47,6 11,1 41,5 14,0 9,9 6,1 6,6 3,1

    32 47,6 11,1 41,5 14,0 9,9 6,1 6,6 3,1

    35 50,8 11,1 44,6 14,0 9,9 6,1 6,6 3,1

    38 53,9 11,1 47,8 14,0 9,9 6,1 6,6 3,1

    40 60,3 12,7 54,2 15,0 10,9 6,3 7,9 3,1

    42 63,5 12,7 57,3 15,0 10,9 6,3 7,9 3,1

    45 66,6 12,7 60,5 15,0 10,9 6,3 7,9 3,1

    48 69,8 12,7 63,7 15,0 10,9 6,3 7,9 3,1

    50 76,2 14,2 70,0 16,2 12,1 7,6 8,7 3,9

    55 79,3 14,2 73,2 16,2 12,1 7,6 8,7 3,9

    60 82,5 14,2 76,4 16,2 12,1 7,6 8,7 3,9

    65 85,7 15,8 79,6 17,3 13,2 8,6 9,6 4,3

    886HT ROTARY ASSEMBLY Dimensional Data/Metric

    886HT STATIONARY ASSEMBLY Dimensional Data/Metric

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    Seal Recommendationsby Fluid

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    3 - 2

    CONCENTRATION ANDTEMPERATURE RANGESConcentration: Listed as a percentage ofthe pure component. The diluent for all non100% entries is water unless otherwise noted.

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    MethylButanol;SeeAmylAlcohol

    AmylHydride;SeePentane,-

    n

    Amylum;SeeStarch

    PhenylAmine;SeeAniline

    AntOil;SeeFurfural

    Azine;SeePyridine

    AzoticAcid;SeeNitricAcid

    BakingSoda;SeeSodiumBicarbonate

    BenzeneCarboxylicAcid;SeeBenzoicAcid

    BenzeneCarbonal;SeeBenzaldehyde

    BlueVitriol;SeeCopperSulfate

    BranOil;SeeFurfural

    Bischofite;SeeMagnesiumChloride

    Carbinol;SeeMethylAlcohol

    CausticLime;SeeCalciumHydroxide

    Tetrachloromethane;SeeCarbonTetrachloride

    PhenylChloride;SeeChlorobenzene

    Chloroethane;SeeEthylChloride

    ChloroethanoicAcid;SeeChloroaceticAcid

    Chloroethylene;SeeVinylChloride

    Chloromethane;SeeMethylChloride

    Chlorothene;SeeTrichloroethane

    PimlicKetone;SeeCyclohexanone

    EthylCarbonate;SeeDiethylCarbonate

    DioxysuccinicAcid;SeeTartaricAcid

    BoleticAcid;SeeFumaricAcid

    GlaubersSalt;SeeSodiumSulfate

    Methanal;SeeFormaldehyde

    SandAcid;SeeHydrofluosilicicAcid

    Ketone;SeeIsophorone

    MethylPhenylKetone,m-;

    SeeAcetophenone

    Ligroin;SeeNitrobenzene

    OctadecanoicAcid;SeeStearicAcid

    OctadecanoicAcid,9-;

    SeeOleicAcid

    CarbolicAcid;SeePhenol

    PhthalicAcid;SeeTerephthalicAcid

    Triad;SeeTrichloroethylene

    WhiteVitriol;SeeZincSulfate

    TinTetrachloride;SeeStannicChloride

    TinChloride;SeeStannousChloride

    FLUID

    PERCENTCONCENTRATION

    CTEMPERATURE

    F

    CAS

    SEAL

    MATERIAL

    PIPINGPLANS

    SEAL

    MATERIAL

    PIPINGPLANS

    Primary

    MechanicalSealRecommendation

    sbyFluid

    Fluid

    Information

    Materialsof

    Construction

    Performance

    Capabilites

    Secondary

    Recommended

    MechanicalSeal

    Fluid

    Properties

    SA20HBHCMONELTICBCRTCSSCRSCDCFKMEPBUNA-NNEOPRENETJ/FKMFF550FF250

    3 - 22

    PHASESPECIFICGRAVITY(25C)

    VAPOR(ATM)PRESSURE(25C)

    BOILING(C)POINT

    MELTING(C)POINT

    VISCOSITY(CP)(1ATM)(25C)

    HAZARDINFO

    NOTES

    Metals

    Faces

    KEY-Page3-2

    NOTES-1

    -

    CRYSTALLIZINGFLUID

    2-

    SLURRYORABRASIVEFLUID

    3-

    FLUIDMAYSETUPORHARDEN

    4-

    FLUIDMAYFLASH

    5-

    NONLUBRICATINGFLUID

    6-

    VHAP

    Elastomers

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    Section 4

    Environmental

    Control Plans

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    Environmental Control Plans

    4 - 2

    PLAN 11

    DischargeRecirculation Use with a single seal Cools seal Increases pressure in

    seal chamber Clean fluids only

    solids can erode seal An orifice can be used

    to reduce flow

    PLAN 2

    Cooling Jacket Use with single seal

    or dual sealsMaintains or elevates box

    temperature to preventproduct solidification withpolymers,resins,tars

    Use to cool seal Common heat transfer fluids:

    water thermal oils, glycols steam

    A close tolerance thermalbushing recommended

    PUMPSUCTION

    PUMP DISCHARGE

    OPTIONALFLOWMETER

    HEAT TRANSFERFLUID OUT

    EXTERNALHEAT TRANSFER

    FLUIDI N

    PUMPSUCTION

    PUMP DISCHARGE

    RESTRICTION(THROAT) BUSHING

    RESTRICTION(THROAT) BUSHING

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    4 - 3

    PLAN 13

    SuctionRecirculation Use with a single seal

    Prevents solids hang-up Lowers seal chamber pressure Cools seal Reduces seal generated heat Use caution with low

    vapor liquids Stuffing box lantern ring

    connection can also be used

    PLAN 21

    Cooled DischargeRecirculation Use with a single seal Cools seal in hot services

    and/or volatile fluids Increases pressure in

    seal chamber Solids in product can

    erode seal An orifice can be used

    to reduce flow Close clearance bushing

    recommended

    PUMPSUCTION

    PUMP DISCHARGE

    HEAT EXCHANGER

    COOLANTOUT

    COOLANTIN

    PUMP DISCHARGE PRODUCTOUT

    PUMPSUCTION

    PRODUCTIN

    RESTRICTION(THROAT) BUSHING

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    4 - 4

    PLAN 23

    Cooling WithPumping Ring Use with a pumping ring seal

    Cools seal in hot servicesand/or volatile fluidsMinimizes heat exchanger size

    and coolant water usage Close clearance bushing

    recommended

    PLAN 32

    Flush Use with a single seal Prevents solids hang-up Acceptable flush fluids

    Clean compatible fluid Water, if compatible Clean product Downstream additive Carrier fluid

    HEAT EXCHANGER

    COOLANTOUT

    COOLANTIN

    PUMP DISCHARGE

    PRODUCTOUT

    PRODUCTIN

    PUMPSUCTION

    4 ft.(1,2 m)MAX.

    CLEAN FLUSHIS 515 PSIGREATER THANTHE MAXIMUM

    SEAL CHAMBER PRESSURE

    FLOWMETER

    PUMP DISCHARGE

    CLEANEXTERNAL

    FLUSH

    PUMPSUCTION

    RESTRICTION(THROAT) BUSHING

    1 ft. (0,3 m)MINIMUM

    RESTRICTION(THROAT)BUSHING

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    4 - 5

    PLAN 52

    Circulation WithExternal BufferFluid Tank

    Use with a dual seal Low pressure buffer fluid,

    2,0 bar g minimum Buffer fluid should be clean,

    compatible and lubricating Gland inlet and outlet

    connections dependenton shaft rotation

    PLAN 53

    Circulation WithPressurized ExternalBarrier Fluid Tank Use with a dual seal Pressurize barrier fluid

    1 - 2 bar g over maximumseal chamber pressure

    Barrier fluid should be clean,compatible and lubricating

    Gland inlet and outletconnections dependent

    on shaft rotation

    EXTERNALGAS PRESSURE

    PUMPSUCTION

    PUMP DISCHARGE

    FILL

    BUFFERFLUID TANKWITHOPTIONALHEATEXCHANGER

    1ft.(0,3 m)MIN.

    COOLANT INLETAND OUTLET

    4 ft.(1,2 m)MAX.

    4 ft.(1,2 m)MAX.

    FILL

    VENT

    BARRIERFLUID TANKWITHOPTIONALHEATEXCHANGER

    PUMP DISCHARGE

    COOLANT INLETAND OUTLET

    1 ft. (0,3 m) MIN.

    PUMPSUCTION

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    4 - 6

    PLAN 54 with DualFlow

    Circulation WithPressurized ExternalBarrier Fluid Sourceand DualFlow Use with a dual seal DualFlow simultaneously

    sets and monitors barrierfluid pressure and flow

    Pressurize barrier fluid1 - 2 bar g over maximumseal chamber pressure

    Barrier fluid should be clean,compatible and lubricating Gland inlet and outlet

    connections dependenton shaft rotation

    PUMP DISCHARGE

    OPTIONALLOW FLOW

    ALARM

    CLEAN BARRIERFLUID IN

    BARRIERFLUID OUT

    PUMPSUCTION

    PLAN 53 Modified

    Circulation WithPressurized ExternalBarrier Fluid Tank

    Maintains constant pressureand liquid supply to thedual seal

    External water pressure isset at 2 bar g over maximumseal chamber pressure

    Initial tank level is setthrough the external waterpressure line

    Pressurize tank to 1,75 bar gover maximum seal chamberpressure with a regulated

    gas pad, then isolateTank is then charged with

    regulated externalwater pressure

    EXTERNALGAS PRESSURE

    4 ft.(1,2 m)MAX.

    FILL

    BARRIERFLUID TANKWITHOPTIONALHEATEXCHANGER

    PUMP DISCHARGE

    COOLANT INLETAND OUTLET

    1 ft. (0,3 m) MIN.

    PUMPSUCTION

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    4 - 7

    PLAN 62

    Quench Use with a single seal Prevents coking and

    crystallization Common quench fluids:

    steam,water, nitrogen Low pressure only

    PLAN 54

    Circulation WithPressurized ExternalBarrier Fluid Source

    Use with a dual seal Pressurize barrier fluid

    1 - 2 bar g over maximumseal chamber pressure

    Barrier fluid should be clean,compatible and lubricating

    Gland inlet and outletconnections dependenton shaft rotation

    PUMP DISCHARGE

    PUMP DISCHARGE

    FLOWMETER

    BARRIERFLUID OUT

    DRAIN OUT

    CLEANEXTERNALBARRIER

    FLUID

    CLEANEXTERNAL

    QUENCHIN

    PUMPSUCTION

    PUMPSUCTION

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    Section 5

    Reference

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    Pressure (bar) x 9.8 mm Hg. x 0.0014

    SG SG

    Pressure (bar) =

    Head (m) x SG

    0.0014

    Power (kW) =Q (l/min) x Head (m) x SG

    efficiency x 6128

    Head (m) x SG

    9.8

    Mm of Mercury =

    Head (m) =

    5 - 2

    Chesterton Mechanical Seal Guide

    Reference

    SHAFT SPEED CONVERSION CHART

    FORMULAS:

    SHAFT SPEED CONVERSION TABLE

    =

    Seal chamber pressure must be known before the proper sealand flush plan can be selected. Seal chamber pressure can vary frompump design,f low rate, and fluid being pumped.Suction and dischargepressures are required to perform these calculations. Often, pump specsheets can be old and outdated i.e.,design, operating points may havechanged due to a change in process demands.It is for this reason,

    that suction and discharge pressures should be physically measuredwith pressure gages.

    Single Stage, Single Suction, Overhung Process PumpsOverhung ANSI pumps are the most common process pumps inthe industry.The seal chamber is located behind the pump impeller.Seal chamber pressure can vary based on pump design.Pump designs include wear rings and balance holes in the impellerto reduce thrust load on the bearings.The seal chamber pressureis a function of wear ring clearance as well as size and locationof the balance holes. The following equations are based on closedthroat design seal chambers.

    Enclosed or Semi-Enclosed Impellers with Psb = Ps + .05(Pd-Ps)wear ring design and balance holes

    Open Impeller Psb = Ps + .25(Pd-Ps)

    Single Stage,Double Suction PumpsThe single stage,double suction impeller is Psb = Psplaced between bearings while the sealchambers are located adjacent to the suctioneyes of the impeller.The stuffing box pressureis equal to the suction pressure.

    Multi-Stage PumpsMulti-stage pumps inherently have higher discharge pressures,but low to medium stuffing box pressures due to impeller arrangement,casing design, balance drums and the use of balance lines.

    These multi-stage pumps can be mounted horizontally or vertically.

    SEAL CHAMBER PRESSURE ESTIMATION

    SHAFT DIA. (mm)

    SHAFT DIA.(Inches)

    Use formulas below to determineapproximate shaft speeds if not shown in chart above.

    SURFACESPEED(Feetpermin.)

    SURFA

    CESPEED(Meterspersec.)

    Two Stage Horizontal PumpsImpeller arrangement can have two configurations:1. Back to BackIn this arrangement, the seal chambers are Psb1 = Pslocated adjacent to the suction eye of the impeller.One chamber will see suction pressure and the Psb2 = Ps+.5(Pd-Ps)

    other will see first stage discharge pressure.2. Eye to EyeIn this arrangement the seal chambers are Psb1 = Ps+.5(Pd-Ps)located adjacent to the backside of the impeller.One chamber will see the discharge of the first Psb2 = Pdstage and the other will see pump dischargepressure (second stage discharge).

    Multi-Stage Horizontal PumpsMulti-stage Boiler Feed Pumps are used to Psb1 = Psdevelop high pressures, but the seal chamberis not necessarily at a high pressure.Thesepumps have a low pressure chamber (suctionpressure) and a higher-pressure chamber(pressure between suction and discharge).

    Typically,a balance line is used to reduce Psb2 = Ps+5 bar gpressure in the higher pressure seal chamber.

    Provided pump tolerances are in check, thehigher-pressure seal chamber is as follows:

    NOTE: I f pump tolerances are not in check, Psb2 = Ps+.5(Pd-Ps)and in the absence of a balance line thehigher-pressure chamber will be a pressurebetween suction and discharge pressure.

    Mulit-Stage Vertical Pumps (Can or Turbine)In these pumps the seal chamber is located Psb = Pdat the discharge elbow.Therefore the sealchamber pressure would see discharge pressure.

    NOTE: The installation of a bleed-off line can Psb = Ps+5 bar greduce seal chamber pressure providedpump tolerances are in check.

    Dia. millimeters x R.P.M.M/S =

    18750Dia. inches x R.P.M.

    FPM =4

    RPM

    SHAFTmm

    1450M/S

    2900M/S

    25 1.9 3.828 2.1 4.230 2.3 4.632 2.4 4.933 2.5 5.035 2.7 5.338 2.9 5.840 3.0 6.143 3.3 6.545 3.4 6.848 3.6 7.350 3.8 7.6

    RPM

    SHAFTmm

    1450M/S

    2900M/S

    55 4.2 8.360 4.6 9.165 4.9 9.970 5.3 10.675 5.7 11.480 6.1 12.185 6.5 12.990 6.8 13.795 7.2 14.4

    100 7.6 15.2110 8.3 16.7120 9.1 18.2

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    Mariners Measure6 Feet = 1 Fathom120 Fathoms = 1 Cable Length (U.S.N.)

    8.439 Cable Lengths = 1 Nautical Mile6076.12 Ft = 1 Nautical Mile1 Nautical Mile = 1.15 Statute Mile (International )

    Inch System ConversionInches x 0.0254 = MetersFeet x 0.305 = MetersYards x 0.914 = MetersMiles x 1609. = MetersMiles x 1.609 = KilometersMillimeters x 0.03937 = InchesCentimeters x 0.3937 = InchesMeters x 39.37 = InchesMeters x 3.281 = FeetMeters x 1.094 = YardsKilometers x 0.621 = MilesSq. Centimeters x 0.155 = Square lnchesSq. Meters x 10.764 = Square FeetSq. Meters x 1.186 = Square YardsCubic Centimeters x 0.061 = Cubic lnchesCubic Inches x 16.2 = Cubic Centimeters

    Liters x 0.2642 = GallonsGallons x 3.78 = LitersCubic Meters x 1.308 = Cubic YardsCubic Yards x 0.765 = Cubic Meters

    Metric System PrefixesMega = 1,000,000 Deci = 0.1 Tera (T) = 1012

    Kilo = 1,000 Centi = 0.01 Giga (G) = 109

    Hecto = 100 Milli = 0.001 Nano (N) = 10-9

    Deka = 10 Micro = 0.000001 Pico (P) = 10-12

    Length1 centimeter = 0.3937 inch = 0.0328 foot1 meter = 39.37 inches = 1.0936 yards1 kilometer = 0.62137 mile = 3280 feet1 inch = 2.54 centimeters1 foot = 0.3048 meter1 mil = 0.001 inch

    Square Measure1 sq. cm. = 0.1550 sq. in1 sq. meter = 1.196 sq. yd. = 10.764 sq. ft.1 sq.kilometer = 0.386 sq.mile1 sq. inch = 6.452 sq. centimeters1 sq. foot = 929.03 sq. cm. = 0.092903 sq. meter1 sq. yard = 0.8361 sq. meter1 sq. mile = 2.59 sq. kilometers1 circular mil = 0.7854 sq.mil1 sq. inch = 1,000,000 sq. mils

    Cubic Measure1 cu.centimeter = 0.061 cu.inch 1 cu.in. = 16.39 cu cm.1 cu.meter = 1.308 cu.yards = 35.316 cu.feet.1 gallon (U.S.) = 231 cubic inches1 cu.ft. = 7.48 gallons 1 liter = 1,000 cu.centimeters

    Time1 day = 86,400 seconds 1 year = 8,760 hours (approx.)

    Velocity1 ft./sec = 0.3048 meter/sec 1 meter/sec = 3.281 ft./sec1 ft./min = 0 .00508 meter/sec 1 meter/sec = 196.9 f t./min1 mile/hr = 0 .4470 meter/sec 1 meter/sec = 2.237 mi/hr1 kilometer/hr = 0.2778 meter/sec 1 meter/sec = 3.60 km/hr

    Acceleration1 ft/sec/sec = 0.3048 meter/sec/sec1 mile/hr/sec = 0.4470 meter/sec/sec1 kilometer/hr/sec = 0.2778 meter/sec/secStandard g