3M Marine Adhesive Sealant 5200 is a multi-purpose adhesive sealant made specifically for the marine market. This high-strength adhesive forms a weather-resistant seal. It's unique formula reacts with moisture and provides plenty of working time, taking up to 4 days to fully cure. Ideal for use above and below the waterline, it reliably bonds dissimilar materials including wood, fiberglass, gelcoat, plastics, and metals. Polyurethane sealants such as this form permanently flexible, elastomeric bonds that seal against the elements, maintain joint movement, and absorb stress caused by shock, vibration, swelling or shrinking. Such durability, versatility, and flexibility prepare 3M Marine Adhesive Sealant 5200 for tough applications like sealing portholes, deck/hull fittings, rub rail attachment, screw holes, and stanchion supports. POWERFUL MARINE SEALANT A permanent solution for bonding marine substrates like wood, fiberglass, and metal VERSATILE APPLICATIONS Tough yet flexible polyurethane polymer is ideal for deck housings, hull fittings, porthole mounting, fiberglass transoms, and underside molding WARD OFF WATER Resists saltwater and weathering both above and below the water line FLEXIBLE BONDS Its elastomeric bond absorbs the stress of vibration, swelling, shrinking, and shock LONG WORKING TIME Allows plenty of working time, achieving handling strength in 48 hours For industrialoccupational use only. Not for consumer sale or use