3M marine adhesive sealant 5200 tan. The adhesive sealant is extremely strong, retains its strength above or below water line. Stays flexible too - allows for structural movement. Has excellent resistance to weathering and salt water. Recommended application fiberglass deck to hull, through hull fittings, wood to fiberglass, portholes and deck fittings, motors on fiberglass transoms, under moldings, hull seams above and below water line and deck housing.