3M Marine Adhesive Sealant is a one-component, high-strength, moisture-curing, gap-filling polyurethane for permanent bonding of wood, gelcoat and fiberglass. It cures to form a firm, rubbery, waterproof seal on joints and boat hardware, above and below the waterline. Ideal for through-hull and deck fittings and deck to hull joints.

Product Features:

• Permanent bonding above and below the waterline
• Tough and flexible polyurethane polymer forms strong bonds
• Capable of retaining strong bonds during vibration, swelling, shrinking or shock
• Fast-cure version of 3M marine adhesive sealant 5200
• Tack-free in 1-2 hours and typically cures within 48 hours