SikaSeal®-490 SL

SikaSeal®-490 SL complies to:

• ASTM D 3137: Standard test method for hydrolytic stability.
• BS EN 14188-2: Joint filler and sealant for cold applied sealant (BS EN 14187-5: Cold applied joint sealants - test method for the determination of the resistance to hydrolysis).
• BS 5212-1: Cold applied joint sealant systems for concrete pavements.
• U.S. Federal Specification SS-S200E: Sealants, joint, two component, jet blast resistant, cold applied for portland cement concrete pavement.
• ASTM C 920 Type M, Grade P, Class 25, Use T, NT and M.
• BS EN ISO 9046: Determination of adhesion/ cohesion properties of sealants at constant temperature.
• BS EN ISO 9047: Determination of adhesion/ cohesion properties of sealants at variable temperatures.

SikaSeal®-490 SL has a shelf life of 12 months from the date of production, if it is stored in undamaged, original, sealed packaging, and if the storage conditions are met.

SikaSeal®-490 SL shall be stored in dry conditons, where it is protected from direct sunlight and at temperatures between +5°C and +25°C.

~26

+5°C to +45°C, min. 3°C above dew point temperature

+5°C to +45°C, min.

These are approx. consumption and may vary based on actual site conditions.

• All surfaces must be clean, dry and free from any loosely adhering particles.
• Check the joints edges for soundness and if found weak cut recess and fill up with suitable repair mortar.
• Correct joint depth can be established by inserting closed cell polyethylene backing rod tightly into the joint.
• When the joints have been filled with fiber filled board, this must be raked back to the required depth. Use bond breaker tape over the backer material.
• Protect surfaces with masking tape.

• Mix and use one complete unit at a time. Do not split the units.
• Add comp. B into the comp. A pail. Mix the product thoroughly with a mixing paddle fitted to an electric hand drill, not exceeding 500 rpm, to avoid air entrapment.
• Mix for approximately 5 - 10 minutes until a smooth, even consistency is achieved.
• The sides and base of the container should be periodically scraped down to ensure all of the comp. B is completely blended with the comp. A.
• Failure to mix correctly will result in bubbles, uncured sealant and lumps.
• Once the product is mixed it should be used immediately. 

• SikaSeal®-490 SL must always be applied to surface primed with Sika® Primer-190 or Sika® Primer-117 MS.
• SikaSeal®-490 SL should be applied between 2 hours to 6 hours at 23⁰C of primer application.
• If joint is not sealed within recommended time, the joint must be re-primed.
• If the joint is not sealed or re-primed within 24 hours, the cured primer should be removed and joint primed again.

• The mixed SikaSeal®-490 SL maybe poured directly from the tin or can be loaded into a gun for application.
• For detailed, recommended surface preparation and installation procedures, refer to SikaSeal®-490 SL method statement.

• Application equipment should be cleaned immediately with Sika®Colma Cleaner, acetone or any suitable cleaning solvent after use.
• Hardened / cured material can only be mechanically removed