3M Marine Fast Cure General Purpose Adhesive Sealant 4200FC is a one-part general all-purpose polyurethane that chemically reacts with moisture to give a flexible bond with good adhesion on most materials. 3M™ Marine Fast Cure General Purpose Adhesive Sealant 4200FC can be used for bonding and caulking different materials used in the marine industry : concrete, wood, aluminium, most lacquered metals, polyester, glass, etc.