3M Marine Grade Silicone Sealant (White, 3-Ounce Tube) Silicone rubber sealant that is mildew resistant, non-sagging and moisture-curing Remains flexible with excellent resistance to marine environment Adheres to bare and painted metal, fiberglass, glass, non-oily woods and many plastics and abraded rubbers Marine, general industrial Bonding, attaching and assembling Remains flexible with excellent resistance to marine environment Adheres to bare and painted metal, fiberglass, glass, non-oily woods and many plastics and abraded rubbers Marine, general industrial Bonding, attaching, and assembling