A unique combination of marine silicone and polyurethane, formulatedespecially for fiberglass. LifeSeal® offers a fast-curing, low odor,high adhesion, non-sagging, non corrosive, non-yellowing formula. Itprovides a durable permanent watertight seal for joints subject tostructural movement. May be used above and below the waterline. Use forsealing decks to hulls, thru-hull fittings, vinyl ports, sealing/glazingwindshields and bedding marine hardware. Will adhere to metal, glass,wood, Lexan®, ABS® and certain other materials. Can be removed withoutdamaging gel-coat. Not recommended for ferro cement hulls, impregnatedwood or oil soaked materials. Cures in presence of water. Mildew resistant and acid free.