Boatlife Marine Silicone Rubber Sealant Boatlife Marine Silicone Rubber Sealant is an all-purpose, 100 marine high quality silicone sealant. This sealant is non-corrosive, acid-free, non-yellowing, mildew-resistant, and low-odor. This silicone rubber sealant is for use above or below the waterline. Features superior flexibility and adhesion to fiberglass, plastic, metal, and wood. Boatlifes Silicone Rubber Sealant retains flexibility and tensile strength even after years of exposure. This produc