Berkland Marine Adhesive Sealant 5200 Fast Cure (White) is a marine-grade polyurethane sealant designed for permanent watertight bonding above and below the waterline. Use it on boats, RVs, and home applications where you need a flexible, UV-resistant seal that won't fail in extreme conditions.

Fast-cure formula sets in approximately 24 hours and reaches full strength in 48 hours. Stays flexible after curing — won't crack under hull flex or thermal movement.

Bonds wood, fiberglass, aluminum, and most marine substrates. Available in white to blend with hull and deck finishes. Made in the USA.

Applications: hull-to-deck joints, through-hull fittings, portlight bedding, hardware bonding, RV roof seams, gutter and downspout repair.