Project 1 6700 Series-100% Neutral Core Silicone is a high quality, single-component, 100% silicone sealant which provides superior adhesion to materials and surfaces where general purpose silicones fail. Project 1 Neutral Cure Silicone exhibits superior adhesion, resists temperature extremes and UV deterioration. It will not react or corrode most metals or plastics. Use on bare metals, painted surfaces, glass, gel-coated surfaces, filon, vulcanized rubber, non-oily woods, polyurethane foam, PVC, and most plastic surfaces. Use it on masonry, brick, concrete, stone, vinyl siding, windows and doors. It is the perfect choice for general assembly manufacturing operations where superior adhesion and long term performance is required. Product will not yellow or discolor in exterior applications.