M-1 Marine is a moisture cure marine adhesive/sealant formulated for applications above or, post cure, below the water line. M-1 Marine is free of solvents, phthalates and isocyanates, will not shrink upon curing or discolor from ultraviolet exposure, and will not bubble on damp surfaces. This marine sealant adheres to many surfaces usually without priming - including teak, fiberglass, vinyl, glass, FRP and metal - forming a strong bond, yet remaining resilient and flexible after cure. M-1 Marine can be applied in wet or dry climates and at temperatures as low as 32°F (0°C).