BOATLIFE- * A long lasting, permanently flexible marine sealant which can be sanded, painted and used above and below the waterline. Tack-free in 24 hours or less. LifeCalk curing time is dependent on quantity applied, temperature and humidity. It offers excellent resistance to teak oils, gasoline and diesel fuel. Use to bed deck and hull hardware, seal thru hull fittings on wood and fiberglass boats, and to seal wooden boat and deck seams. Will bond to fiberglass, wood, metal, glass and itself. Cures to a firm flexible rubber seal with excellent waterproofing and adhesion qualities. Apply to clean surface for best results. Clean surface with LifeCalk solvent or with acetone. Can be used underwater for emergency repairs. Do not use on Lexan or ABS.