Chemitac 4A is a heat reactive adhesive for bonding silicone elastomers (VMQ) with steel, aluminum, aramid, textile fibers and glass by vulcanization process. The textile fibers can be: Cotton, cellulose, polyamide, polyester, and aramid. This adhesive is also used to promote adhesion between the elastomer and chemically treated surfaces which cannot be grit blasted such as: Phosphate steel, galvanized, chromate conversion treated and stainless, moreover ceramic engineering. Chemitac 4A is a heavy metals free product.