SILICONE SEALANTS

Approx. Rs 149 / PieceGet Latest Price

• One-part room temperature cured silicone sealant 
•  Keeps flexibility at -40°C~150°C after cured 
•  Good adhesion to various construction substrates, such as glass, anodized aluminum, GMS steel, ceramic, and some surface treated materials.
• Applications: Residential window and door glazing and sealing 
•  Residential decoration filling and sealing, frame and floor filling.
• Correct Joint Design: Correct joint design minimizes stresses on the sealant, enables optimum sealant movement capability, facilitates sealant application and minimizes the potential for sealant splitting and voiding by enabling cure by-products to exit from the joint.
•  Clean All Joint Surfaces: For non-porous materials such as glass and aluminum alloy materials: Wipe the interface surface with a lint-free, white cloth and solvent to clean grease and dirt. 
•  Immediately wipe again with another piece of clean cloth to completely remove any remaining solvent and impurities from the interface. 
•  Primer: Some materials may require a Dow primer to enhance adhesion to the material. Please contact Dow for more information on Dow primer.
• Substrate surfaces must be completely clean, dry and sound. Completely remove any loose debris and/or old sealant. Since many materials have protective films, they need to be cleaned with solvents such as toluene, xylene, methyl ethyl ketone, and banana oil.
• Install Backing Material: Backer rod (e.g. closed cell polyethylene type or open cell polyurethane foam type) or similar material (e.g. low tack polyethylene tape for shallow joints) can be used in the base of the joint to control sealant depth and avoid 3 sided adhesion by prevention adhesion to the base of the joint.
• Mask Adjacent Surfaces With Masking Tape: Masking will ensure a clean, neat appearance and reduce clean up by protecting surrounding areas from excess sealant.
•  Tool Joint and Remove Masking Tape: Tool the surface of the joint immediately after sealant application to provide a smooth even finish and to ensure the sealant wets the sides of the joint. 
•  Tooling should be completed in one continuous stroke before the sealant forms a skin (i.e.: within the working time). A tool with a convex profile is recommended to keep the sealant within the joint. When sealing horizontal joints tool the sealant to that any liquids (e.g. rain water, cleaning solutions) do not collect and pool on top of the sealant. 
•  Do not use soap or water as tooling aids. 
•  Remove masking tape immediately after tooling and before the sealant skins. 
•  After a skin has formed, do not disturb the joint for 48 hours. 
•  Avoid contact with various cleaning agents or solvents whilst sealant is curing. 
•  Uncured sealant can best be cleaned from tools using commercial solvents such as xylene, toluene or methyl ethyl ketone. Cured sealant is not soluble and must be trimmed with a blade, avoid undercutting the seal.
• Test it before use: The user is responsible to conduct property test before using to confirm the sealant produces satisfied results. Especially for the surface which is difficult to adhesion and coated substrates, the cohesiveness should be tested. Be careful the application temperature. When the substrates surface is over than 50°C, it is easy to cause fast-cure or bubbles. When the substrates temperature is lower than 5°C, it is easy to slow-cure. And also, a layer of indiscernible fog is formed on the surface of substrates, which affects the cohesive, so it should be wiped with a piece of dry cloth or heat blow drier. 

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