DOWSIL 1200 OS Primer is an air drying primer supplied as a dilute solution of moisture reactive materials in volatile siloxane
DOWSIL 1200 OS Primer is used to improve both the quality and speed of adhesion development to room temperature vulcanizing silicone sealants to a variety of common non-porous substrates. Apply in a very light, even coat by wiping, dipping, spraying and removing excess material.
When dipping or spray coating, diluting by a factor of 2 to 4 with additional solvent may avoid excessive build-up that appears as a white, chalky surface. Apply additional cleaner/primer to the cloth every 3 to 5 minutes to ensure fresh material can react with the substrate.
- Useful on most metals, glass, ceramics, masonry, wood, fabric and some plastics (including FR-4)
- Enhances bonding/adhesion of RTV
- Heat cure silicones to metals, ceramics, structural plastics
- Useful for both moisture curing RTV and heat curing silicones
- Diluted in low molecular weight silicone fluid
- Meets many international regulations for low VOC content (including European Union)
- Similar to P5200 Primer.