A unique combination of marine silicone and polyurethane formulated especially for fiberglass, LifeSeal® offers a fast-curing, low odor, high adhesion, non-sagging, non-corrosive, non-yellowing formula. It provides a durable permanent watertight seal for joints subject to structural movement and may be used above and below the waterline. Use Life Seal for sealing decks to hulls, thru-hull fittings, vinyl ports, sealing/glazing windshields and bedding marine hardware. It will adhere to metal, glass, wood, Lexan®, ABS® and certain other materials. It is important to note that, if necessary, Life Seal can be removed without damaging gel-coat. The sealant is not recommended for ferro cement hulls, impregnated wood or oil-soaked materials. It cures in the presence of water, is mildew resistant and acid free. This self leveling liquid formula for sealing fine cracks and seams is perfect for plastic windshields.