A faster curing version of 3Mô Marine Adhesive/Sealant 5200. This high performance polyurethane becomes tack free in one hour and fully cures in approximately 24 hours. The seal is extremely strong, retains its strength above or below the water line. Stays flexible too and allows for structural movement. Won't sag or flow in vertical or horizontal seams. Effectively absorbs stress caused by shock, vibration, swelling and shrinking. This product can handle these bonding and sealing jobs: fiberglass deck to fiberglass hull, wood to fiberglass, portholes and deck fittings, motors on fiberglass transoms, under mouldings, hull seams above and below water line. Center board trunk joints. May also be used, between struts and planking, in stern joints, on deck housing, etc. Has excellent resistance to weathering and salt water.