Dow Corning 786 clear RTV silicone sealant is perfect for nonporous surfaces, showers, tubs, sinks and plumbing fixtures. Dow 786 Silicone Sealant is a one-component, silicone rubber sealant that is suitable for sealing porcelain, cultured marble, glass, painted areas, and other nonporous surfaces and plumbing fixtures for both new and remedial construction. Dow 786 silicone caulk is ideal for usage where high humidity and temperature extremes are present. Dow Corning was established in 1943 specifically to explore and develop the potential of silicones. It has grown to become a global leader in silicone-based technology and innovation. Dow Corning provides performance-enhancing solutions to serve the various needs of more than 25,000 of its customers worldwide. As a global leader in silicones, silicon-based technology and innovation, Dow Corning offers more than 7,000 products and services today.