Module: 4 Viton - Selection Guide · Viton® Relative Performance Viton® product A B F GBL-S* GF-S * GLT-S * GBLT-S * TBR-S * Extreme ™ bisphenol 60% {BEST 2 low peroxide 66% medium

Module: 4Viton® - Selection Guide

Viton® is a registered trademark of DuPont Performance Elastomers. AST January 2006 Module 4 Page 2

Monomers used in Viton®

F2C=CF2 (76% fluorine)tetrafluoroethylene

TFE

H2C=CF2 (59% fluorine)vinylidenefluoride

VF2

F2C=CF-CF3 (76% fluorine)hexafluoropropylene

HFP

H2C=CH2ethylene

E

F2C= CF-O-CF3 (69% fluorine)Perfluoro (methyl-based vinyl) ether

PMVE P

H2C=CH-CH3propylene

Carbon Hydrogen Fluorine Oxygen


Viton® Types Monomer Composition

Standard Viton® Specialty Viton®

Viton® ExtremeTMLowTemperature

Viton® made with APA

*Cure Site Monomer (composition depends on polymer)

VF2 HFP TFE PMVE EP CSM*

A

66%F

BF

AL

66-69.5%F

GBL-SGF-S

68-70%F

GLT-SGBLT-S GFLT-S

64-67%F

ETP-S

67%F

TBR-S

60%F


Fluoroelastomersbased on VF2, HFP and TFE

Polyvinylidenefluoride[PVDF]Polytetrafluoroethylene

[PTFE]

Viton® A, B, F, GBL-S, GF-S fluoroelastomers

Using PMVE instead of HFP can give polymers with Tg about 15°C lower (e.g. GLT-S, GBLT-S, GFLT-S) Fluoroelastomer design - balancing fluid resistance and Tg

Ref.: Anestis L. Logothetis: fuoroelastomers, OrganoFluorine Chemistry: Principles and Commercial Applications, edited by R. E. Banks et al, Plenum Press New York 1994 (H59615)


Monomer Composition Impacts

Chemical resistance

Low temperature properties


Viton® Polymer Types

Standard Viton®Standard Viton® Specialty Viton®

(Low Temperature)Specialty Viton®

(Low Temperature)

Specialty Viton® ExtremeTMSpecialty Viton® ExtremeTM

«A» family66% Fluorine

«B» and «GBL-S» families68% Fluorine

«F» and«GF-S» families70% FluorineMost Fluid Resistant

«GLT-S» family64% Fluorine

«GBLT-S » family66% Fluorine

«GFLT-S» family67% Fluorine

ImprovingChemical Resistance

ImprovingChemical Resistance

andDecreasingHydrogenDecreasingHydrogen

IncreasingFluorineIncreasingFluorine

*LT stands for Low TemperatureTBR-S, 60% Fluorine

ETP-S, 67% Fluorine


Standard Products Specialty Products

Viton® Relative Performance

Viton® product A B F GBL-S* GF-S * GLT-S * GBLT-S * TBR-S *

Extreme ™

bisphenol

60%

BEST

low

peroxide

66%

medium

peroxide

64%

BEST

medium

GFLT-S *

peroxide

67%

medium

peroxide

70%

low

ETP-S *

Heat resistance All Viton® products have outstanding thermal properties

Extreme ™

Chemical resistance* * BEST

Curing system bisphenol bisphenol bisphenol peroxide peroxide

Fluorine content 66% 68.5% 69.5% 68% 67%

Base resistance BEST

Low temperature properties

Compression set resistance BEST

Relative cost of polymer low low low low high

Excellent Very good Good Fair poorBEST

* “S” indicates products made with Advanced Polymer Architecture** Consult the Chemical Resistance Guide at www.dupontelastomers.com or contact your Viton® specialist.


Viton® Polymers and Typical Applications

Best fluid resistanceBest fluid resistance

-35

-30

-25

-20

-15

-10

-5

0 5 10 15 20 25 30 35Volume swell upon immersion in M15 / 7 d / room-temperature (%)

Fuel M15 composition: 85% Fuel C and 15% Methanol

Low

tem

pera

ture

flex

ibili

tyTR

-10

(°C

)

ALAL

BB

GFLTGFLT--SS

GLTGLT--SSGBLTGBLT--SS

GBLGBL--SS AA

GFGF--SS(F)(F)ETPETP--SS

High fluorine for bestchemical resistance(e.g., steam and acid)

High fluorine for bestchemical resistance(e.g., steam and acid) Easy processing

low fluorine(e.g., standard o-rings)

Easy processinglow fluorine

(e.g., standard o-rings)

Best compression set and processingBest compression set and processing

Broadest fluid resistance(e.g., down hole

Broadest fluid resistance(e.g., down hole BestLow

temperatureperformance

(e.g., fuel injector o-rings)

BestLowtemperatureperformance

(e.g., fuel injector o-rings)

High fluorine with lowtemperature functionality

(e.g., fuel systems)

High fluorine with lowtemperature functionality

(e.g., fuel systems)

red for Viton® made with APA (« -S » for APA technology)


APA Polymersand Typical Market Segments

Best chemical and fuel resistanceBest chemical and fuel resistance

-35

-30

-25

-20

-15

-10

-5

0 5 10 15 20 25 30 35Volume swell after 7 days at room temperature in M15 (%)

Low

tem

pera

ture

flex

ibili

tyTR

-10

(°C

)

ALAL

BB

GFLTGFLT--SS

GLTGLT--SSGBLTGBLT--SS

GBLGBL--SS AA

GFGF--SS(F)(F)ETPETP--SS

Fuel Transportation(Automotive)

Lower permeationLonger seal life

Chemical ProcessIndustry

More heatLower maintenance

Chemical ProcessIndustry

More heatLower maintenance

Fuel Transportation(Automotive)

Lower permeationLonger seal life

Oil & GasSuperior/Broad chemical resistanceExplosive decompression

Oil & GasSuperior/Broad chemical resistanceExplosive decompression

AutomotiveNew fuel generationsLower temperature

AutomotiveNew fuel generationsLower temperature

AerospaceExtreme temperaturesAviation lubricantsleak free

AerospaceExtreme temperaturesAviation lubricantsleak free


Viton® made with APA Application Guide is on the Internetwww.dupontelastomers.com/Products/VitonAPA/apaMatrix.aspx


The Viton® Selection Guide is on the Internethttp://www.dupontelastomers.com/Products/Viton/selectionGuide.asp


Selection Based on Application Needs

YESYES NONO YESYES NONO

Low temperature flexibility better than -20°C?

Low temperature flexibility better than -20°C?ETP-SETP-S

GFLT-SGFLT-S

TBR-STBR-S

GFLT-SGFLT-S

GBLT-SGBLT-S GF-SGF-S

FF GLT-SGLT-S

ALAL

GBL-SGBL-S

AA



BB

YESYES NONONONO

YESYES NONO

Base resistance: Best resistance to aggressive amine based anti-corrosion additives ?Base resistance: Best resistance to aggressive amine based anti-corrosion additives ?

Hydrocarbon resistance (automotive fuels, etc.)?Hydrocarbon resistance (automotive fuels, etc.)?

YESYES NONO

High resistance to oxygenated-fuels(MeOH, MTBE), steam, acids?

High resistance to oxygenated-fuels(MeOH, MTBE), steam, acids?

red for Viton® made with APA (« -S » for APA technology)


The information set forth herein is furnished free of charge and is based on technical data that DuPont Performance Elastomers believes to be reliable. It is intended for use by persons having technical skill, at their own discretion and risk. Handling precaution information is given with the understanding that those using it will satisfy themselves that their particular conditions of use present no health or safety hazards. Since conditions of product use and disposal are outside our control, we make no warranties, express or implied, and assume no liability in connection with any use of this information. As with any material, evaluation of any compound under end-use conditions prior to specification is essential. Nothing herein is to be taken as a license to operate or a recommendation to infringe on patents. While the information presented here is accurate at the time of publication, specifications can change. Check www.dupontelastomers.com for the most up-to-date information.

Caution: Do not use in medical applications involving permanent implantation in the human body. For other medical applications, discuss with your DuPont Performance Elastomers customer service representative and read Medical Caution Statement H-69237.

DuPont™ is a trademark of DuPont and its affiliates.

Viton®, Viton® Extreme™, Kalrez®, Hypalon® and Acsium® are trademarks or registered trademarks of DuPont Performance Elastomers.Copyright © 2006 DuPont Performance Elastomers. All Rights Reserved.

Documents

Module: 4 Viton - Selection Guide · Viton® Relative Performance Viton® product A B F GBL-S* GF-S * GLT-S * GBLT-S * TBR-S * Extreme ™ bisphenol 60% {BEST 2 low peroxide 66% medium