3M Fast Cure 5200 creates an extremely high-strength, watertight seal above and below the waterline.
If you are looking for a bedding compound with exceptionally strong adhesion, and are not concerned about later removal of hardware, 3M Fast Cure 5200 should be at the top of your list. Along with outstanding adhesion, 3M Fast Cure 5200 remains flexible after it cures and it can be used above or below the waterline. Ideal for underwater thru-hull fittings, hull-to-deck joints, portholes and bonding wood to fiberglass.