3M 4200 Fast Cure Marine Adhesive Sealant White 10 oz – Waterproof Boat Sealant

3M™ Marine Adhesive Sealant 4200 Fast Cure / White - 10 oz. (MMM06560)

3M™ Marine Adhesive Sealant Fast Cure 4200FC is a one-component, medium-strength, moisture-curing polyurethane sealant designed for marine applications. It provides strong, flexible, and durable bonds to materials such as aluminum, wood, gelcoat, and fiberglass. This sealant forms watertight and weather-resistant seals both above and below the waterline, making it ideal for quick boat repairs and installations.

• Medium strength bonding allows for future disassembly
• Fast curing: tack-free in 1 hour, typically cures in 24 hours
• Suitable for use above and below the waterline
• Flexible and durable adhesion withstands stress from shock, vibration, swelling, or shrinking
• Gap-filling and permanently elastic for long-lasting performance

This versatile marine adhesive sealant chemically reacts with moisture to deliver flexible bonds with excellent adhesion to wood, fiberglass, gelcoat, plastics, and metals. It is suitable for bonding dissimilar materials and forms a watertight, weather-resistant seal on joints and boat hardware. The medium strength allows for disassembly of parts after extended use. Available in cartridge and sausage packs to suit your application needs.

Recommended Applications:

• Fiberglass deck to hull
• Wood to fiberglass
• Portholes
• Deck fittings
• Rubrail attachment
• Sealing screwholes
• Stanchion supports

Safety data sheet SDS