Lock Cover Sealing Method Statement Rev 1

Macalloy Method Statement

FOR Sealing of Lock Covers on the MACALLOY 460/520

System

MACALLOY I Caxton Way I Dinnington I Sheffield I S25 3QE

T: +44 (0) 1909 519 200 W: www.macalloy.com E: [email protected]

2

METHOD STATEMENT FOR SEALING OF LOCK COVERS ON THE MACALLOY460/520 & S460/S520 SYSTEM

Rev (1) - 11.12.2013

1. The following method statement describes a method of sealing the gap between bar and lock cover in

order to reduce corrosion and bleeding of corrosion products. It is recommended that this be done using

Loctite 5068, Terostat-MS 939 or Bondloc MS58 (see Appendices A, B and C respectively).

2. The joint should be made up and installed as normal except that the inside of the lock cover should be

cleaned, and prior to threading the lock cover back to the fitting, any grease should be removed from the

bar, using Loctite 7063 or a similar proprietary cleaner.

3. With the lock cover in place the open end of the lock cover should be taped over. It is recommended

that this is done using a PTFE tape which is then overlaid with a stiffer tape. The sealant is then injected

into the hole in the side of the lock cover, using a skeleton gun, until the void is completely filled.

Note: All standard lock covers are supplied with injection holes.

4. The tape should be removed immediately from the end of the lock cover (or shortly after applying the

sealant.)

5. Any excess sealant should be removed from the end of the lock cover and around the injection hole, and

the sealant tooled to produce a fillet.

6. The sealant should be left to cure and if necessary any further tidying up can then be carried out.

Note: A safety and data sheet should be supplied with the sealant. This should be read before use

and be complied with.



3

APPENDIX A

LOCTITE DATA SHEET

1. Loctite 5062/5063/5064 Low modulus, grades for joint sealing. Temperature range 50 to100 C with brief excursions up to 120 C. (5062 black, 5063 grey, 5064 white) Typical Applications include: seam and joint sealing in vehicle bodies, railway carriages and ductwork. 2. Loctite 5065/5066/5068 Medium modulus grades for bonding and sealing. Temperature range 40 to 100 C, with brief excursions up to 120 C. (5065 black, 5066 dark grey, 5068 white)

Typical Application include:

bonding/sealing ventilation and air

conditioning equipment as well as

bonding vehicle side panels and

roof skins.

3. Loctite 5069

High modulus, high strength adhesive/

sealant. Temperature range

40 to 100 C, with brief excursions

up to 120 C. Available in black

only.

Typical Applications include:

flexible bonding of metal or painted

substrates.

(All products are supplied in 310 ml cartridge)

TECHNICAL SUMMARY Product Number Loctite 5062/5063/5064 Loctite 5065/5066/5068 Loctite 5069 Bonding No Yes Yes Sealing Yes Yes Yes Paintable Yes Yes Yes UV Resistance Excellent Excellent Excellent Consistency Paste Paste Paste Temperature range C 50 to 100 40 to 100 40 to 100 Tensile Strength (N/mm2) 0.91 3.01 3.51 Hardness Shore A 27 60 50 Elongation to break 300 % 250 %1 190 %1 Skin formation time 10 to 20 mins 2 10 20 mins 2 10 20 mins 2 Cure rate 4 mm/24 h 2 3 mm/24 h 2 3,5 mm/24 h 2 E Modulus (MPa) (E10) 0,1 0,3 0,4 Shelf life (months) 12 12 12 Colour Black /Grey / White Black / DarkGrey / White Black Package sizes 310 ml cartridge 310 ml cartridge 310 ml cartridge 1 DIN 53504 Note: This guide is for initial product selection only. Please contact your local Loctite 2 DIN 50014 standard climate: 23C, 50% relative air humidity Technical Support Group for assistance and recommendations on specifications for these products.

Henkel Loctite Adhesives Limited Watchmead Welwyn Garden City Hertfordshire AL7 1JB England Phone 01707 358800 Fax 01707 358900 www.loctite.com



4

APPENDIX B

TEROSTAT DATA SHEET

Terostat-MS 939 is a gun-grade, one component adhesive/sealant based on silane-modified polymer, which cures by reaction with moisture to an elastic product. The skin formation and curing times are dependent on humidity and temperature, and the curing time also depends on joint depth. By increasing the temperature and the moisture, these times can be reduced; low temperature as well as low moisture retards the process. Terostat-MS 939 is particularly sag-resistant leading to a high position tack after matching of the parts to be bonded. Terostat-MS 939 is free of solvents, isocyanates,

silicones and PVC and is

odourless. It demonstrates good adhesion without primer to many substrates and is compatible with suitable paint systems. The adhesive/sealant also demonstrates good UV resistance and can therefore be used for interior and exterior applications. Terostat-MS 939 demonstrates the strength necessary for elastic bonding. This property of the product also remains at temperatures in repair ovens (max.110oC). Terostat-MS939 shows no shrinkage, and therefore dimpling, tension stress and an unattractive appearance are not observed under these conditions.

Technical Data

Colour White, off-white, grey, black

Odour Odourless

Consistency Paste

Density Ca. 1.5 g/cm3

Solids 100%

Curing mechanism Humidity curing

Sag resistance DIN 52454 profile U10



5

sealant will lead to an increase of viscosity, resulting in a lower extrusion rate. This can be avoided by bring the sealant up to room temperature prior to application. If substrates are too cold, temperature may fall below dew point causing condensation. This can be avoided by bringing the substrates up to room temperature in time. After application, Terostat-MS 939 can be smoothed with soapy water. Where joint edges have been masked, the surface can be smoothed by using a spatula. Equipment contaminated with uncured Terostat-MS 939 may be cleaned using cleaner D. Painting properties When using metallic coatings Terostat-MS 939 must be overpainted wet on wet for optimum adhesion. In the case of uni-paints a time limit before painting up to three days after sealant application is possible. These data are valid for 2K-Acrylic paints. With Alkyd systems drying can slow down (trials are recommended). Curing is slightly retarded by the paint layer but not hindered. Storage Frost sensitive no. Recommended storage temperature 10oC to 25oC Shelf-life 12 months in original packaging Packaging Plastic wallet 570 ml.

Henkel Loctite Adhesives Limited Watchmead Welwyn Garden City Hertfordshire AL7 1JB England Phone 01707 358800 Fax 01707 358900 Germany: Henkel Teroson GmbH D-69112 Heidelberg Telefon (06221) 704-0 Telefax (06221) 704-698 Telex 461 428-10



6

APPENDIX C

BONDLOC MS58 DATA SHEET

Product Description Bondloc MS58 is a single component, high modulus, moisture curing polyurethane adhesive/ sealant. Typical uses Bondloc MS58 is a high quality adhesive/sealant suitable for making permanent elastic seals of high strength. Bondloc MS58 offers excellent primerless adhesion to most common materials such as anodised aluminium, wood, concrete, stone, among others. Benefits - Does not contain isocyanate - High Modulus - High elasticity - Good weathering - Clean - Low odour - Bonds well to wide variety of substrates Methods of application Manual application:

- Ensure surfaces/joints to be bonded and/ or sealed are clean and free from grease, dust and any other contamination.

- For best results clean with Bondloc cleaner - Where applicable prefill joints with a cross-linked polyethylene foam to give the required joint depth. - For maximum bond strength prime surfaces with Bondloc universal primer. - Pierce metal seal on the tip of the cartridge and screw on nozzle. - Cut nozzle to desired size, cutting at an angle of 45o. - Insert cartridge into gun and press out the metal seal at the base of the cartridge. - Apply the material at the desired rate. - Smooth the surface of the joint with a spatula or similar tool dipped in water that contains a little

detergent. - Allow to cure.

Automatic application

- Bondloc MS58 can be applied via semi and fully automatic machinery. Please contact our technical department for further details.

Typical coverage rates Estimated linear metres per 310 ml cartridge

Width(mm)

Depth(mm) 3 6 8 10 12 15 20 25

3 34.4

6 8.6 6.5 5.2 4.3

8 4.8 3.9 3.2 2.6

10 3.1 2.6 2.1 1.6

12 2.2 1.7 1.3 1

Packaging Bondloc MS58 is available in 310 ml cartridges.



7

Typical adhesive characteristics

Chemical base Moisture curing elastomeric

Colour Black, White, Grey, Clear

Specific gravity 1.22

Shrinkage (DIN 52451) 6% approximately

Shore A hardness 58

Elongation at break (ASTM D412) >300%

Modulus at break (ISO 8339) 0.7MPa

Staining None

Lap shear resistance 1.2Mpa

Recovery 45

Curing speed at 23oC and 50% rh 4mm per 24 hours

Skin formation Approximately 30 minutes

Storage Bondloc MS58 when stored in a dry area between 5oC and 25oC will have a shelf life of 9 months. Health and Safety This Technical Information sheet does not constitute a Material Safety Data Sheet. Before using Bondloc MS58 ensure that you have both received and have read carefully the Material Safety Data Sheet for Bondloc MS58 Polyurethane sealant (MSGC Bondloc MS58). Information presented on this sheet is not intended as a formal specification and should be used as a guideline only. Every endeavour has been made to ensure the accuracy of the information contained herein, but customers should conduct their own tests to confirm to themselves the suitability of the product. Therefore Bondloc UK Ltd cannot accept any loss or damage that may result from the use of this information.

Bondloc UK Ltd, Unit 2 Bewdley Business Park, Long Bank, Bewdley, Worcs DY12 2TZ, England Tel: +44 (0)1299-269269 | Fax: +44 (0)1299-269210 www.bondloc.co.uk

Documents

Lock Cover Sealing Method Statement Rev 1