3M Marine Adhesive Sealant Fast Cure 4200FC is a one-component, medium-strength, moisture-curing, gap-filling polyurethane that delivers strong, flexible bonds to aluminum, wood, gel coat, and fiberglass. This medium-strength adhesive forms a weather-resistant seal that still allows for disassembly. Approximately 1/2 the strength of 3M 5200 – allows for disassembly of parts, making it ideal for applications where future maintenance may be required.
Key Features:
- Reacts with moisture to cure fast, forming a tack-free skin in 1 hour and fully curing in 24 hours
- Forms watertight, weather-resistant seals on joints and marine hardware above and below waterline
- Tensile Strength: 180 psi, Shore A Hardness: 40, Service Temperature: -40°F to 190°F
- Paintable and sandable for finishing applications
- Elongation: 750%, Non-sagging formula
- White polyurethane formulation in convenient 3 oz. tube
Ideal for use above and below the waterline, it reliably bonds dissimilar materials including wood, fiberglass, gelcoat, plastics, and metals. Perfect for rub-rails, stern-joints, deck and through-hull fittings, and access plates. Polyurethane sealants such as this form permanently flexible, elastomeric bonds that seal against the elements, maintain joint movement, and absorb stress caused by shock, vibration, swelling or shrinking.
