3M MARINE GRADE SILICONE SEALANT – 3M™ Marine Grade Silicone Sealant is a high quality silicone designed for the harsh marine environment. It forms a mildew-resistant, non-yellowing seal that remains flexible even after years of exposure. Adheres to bare and painted metal, fiberglass, glass, non-oily woods and many plastics and abraded rubbers. Ideal for head and galley sealing applications. Also excellent gasket adhesive and formed-in-place gasket material. Becomes tack free in 5-10 minutes and fully cures in 24 hours. For use above the water line only. Product is sold by the 3 oz. or 10 oz. tubes.