3M(TM) Marine Adhesive/Sealant Fast Cure 4200, 06564, Black, 1/10 Gallon, 12 per case Color - Black. Bonds and seals fiberglass, gelcoat and wood. Ideal for rub-rails, stern-joints, deck and through-hull fittings, and access plates. Medium strength allows for disassembly. When very high strength or unremovable bonds are required, use 3M(TM) Marine Adhesive/Sealant 5200 or 3M(TM) Marine Adhesive/Sealant Fast Cure 5200. Not recommended for sealing wood decks because it may be permanently softened by certain teak cleaners or sealers. On plastics, test 3M(TM) Marine Adhesive/Sealant Fast Cure 4200 to determine suitability.