3M™ Marine Adhesive Sealant 4200FC Fast Cure is a one-component, medium-strength, moisture-curing polyurethane sealant designed specifically for marine applications. It forms flexible, weather-resistant bonds on a variety of substrates, including wood, fiberglass, gelcoat, plastics, and metals. This sealant is ideal for sealing deck fittings and joints both above and below the waterline. It is sandable and paintable, allowing for a clean finish. The product is resistant to weathering agents and seawater, ensuring durability in harsh marine environments. It cures rapidly, becoming tack-free in 1 hour and typically fully curing in 24 hours.
- Forms flexible, weather-resistant bonds on various substrates
- Suitable for above and below the waterline applications
- Sandable and paintable for a clean finish
- Resistant to weathering agents and seawater
- Cures rapidly: tack-free in 1 hour, fully cures in 24 hours
Technical Specifications
- Adhesive Type: Polyurethane
- Color: White
- Container Size: 3 oz (88.7 ml) tube
- Tack-Free Time: 1 hour
- Full Cure Time: 24 hours
- Shelf Life: 730 days
- Application Temperature Range: 40°F to 100°F (4°C to 38°C)
- Service Temperature Range: -20°F to 180°F (-29°C to 82°C)
- Viscosity: Non-sagging, suitable for vertical applications
Materials
The sealant is formulated with a polyurethane base, providing strong, flexible, and durable elastomeric bonds that seal against the elements.
Compatibility Information
3M™ Marine Adhesive Sealant 4200FC is compatible with a wide range of marine substrates, including:
- Wood
- Fiberglass
- Gelcoat
- Plastics
- Metals
It is ideal for bonding and sealing applications such as:
- Fiberglass deck to hull
- Wood to fiberglass
- Portholes
- Deck fittings
- Rubrail attachment
- Sealing screw holes
- Stanchion supports
