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3M 5200 is a one-part marine sealant that cures to form a firm, rubbery waterproof seal. When fully cured, this high strength adhesive remains flexible to resist vibration, swelling, shrinking, or shock.
This permanent adhesive is a strong solution for a variety of marine applications. Use 5200 marine sealant on wood, fiberglass, hardware, seams, joints, between struts, hull fittings, and planking stern joints. Bond or seal fiberglass deck to hull, wood to fiberglass, portholes and deck fittings, motors on fiberglass transoms, under moldings, hull seams above and below water line, centerboard trunk joints, between struts and planking, stern joints and more.
Apply with a manual caulking gun. Sealant remains workable with a trowel or spatula for up to four hours, and won't sag or flow in vertical or horizontal seams.
Choose from White, Black, Tan, and Mahogany for color. 10 oz cartridge shown. Additional sizes available for White and Black.
Consider using 5200 Fast Cure instead if the quickest possible cure rate is a consideration. It has slightly less tensile strength, but provides full cure in as little as 24 hours.




