BoatLife Liquid Life-Calk Sealant. A long lasting, permanently flexible marine polysulfide sealant which can be sanded, painted (not compatible with all paints), and used above and below the waterline. Low viscosity and free-flowing, great for use on fine cracks and seams. Tack-free in 1 to 3 days. Excellent resistance to teak oils, gasoline, and diesel fuel. Ideal for teak decks, to bed deck and hull hardware, seal thru-hull fittings and underwater seams. Will bond to fiberglass, wood, metal, glass, and itself. Cures to a firm flexible rubber seal with excellent waterproofing and adhesion qualities. Can be applied to damp surfaces. 3 fl. oz. tube. Black.