This one-part polyether formula has superior UV resistance and cures to form a firm, rubbery, watertight seal. Remains flexible. Bonds and seals metal, gelcoat, fiberglass, wood, and plastic. Ideal for deck hardware, hatches, portholes, transducers, railings, and navigation lights. Great for visible bond lines. Shipped ground only. | Marine Adhesive/Sealant Fast Cure 4000UV, 3 oz tube