An acetoxy silicone rubber sealant that fills and seals gaps and joints around the boat. It adheres to glass fibre, metal, sailcloth, glass, painted and vanished wood and a variety of plastics. Marine sealant can be used equally well in sealing gaps around hatches, port holes and windows, bedding in deck and hull fittings. Also suitable for locking nuts and bolts against vibration. Seals joints where pipes, trunking or machinery pass through decks or bulkheads, and where flexible watertight joints are required. Used to make gaskets insitu for water pumps, exhaust systems, etc. Is un-affected by immersion in salt or fresh water and is totally watertight.