3M Marine Adhesive Sealant 5200 Black 3 oz – Waterproof Permanent Bonding for Boat Repair

3M™ Marine Adhesive Sealant 5200 – Black, 3 oz. (MMM05205)

3M™ Marine Adhesive Sealant 5200 is a high-strength, single-component polyurethane designed for permanent bonding and sealing in marine environments. This moisture-curing, gap-filling adhesive forms a durable, rubbery, and waterproof seal, making it ideal for both above and below the waterline applications. It bonds wood, gelcoat, and fiberglass, and remains flexible to accommodate structural movement, vibration, swelling, shrinking, or shock.

• Permanent waterproof bonding for marine repairs
• Ideal for hulls, decks, and through-hull fittings
• Flexible to absorb movement and stress
• Suitable for wood, fiberglass, and gelcoat
• Trusted performance for above and below waterline use

Suggested Applications:

• Fiberglass deck to hull bonding
• Through-hull fittings
• Wood to fiberglass joints
• Portholes and deck fittings

Safety data sheet SDS