Description
3M Marine Adhesive/Sealant Fast Cure 4200 is a general purpose adhesive/sealant that allows parts to be disassembled without damaging wood or fiberglass. It is a one part polyurethane that cures with moisture for flexible bonds.
- A one-part general all-purpose polyurethane that chemically reacts with moisture to deliver flexible bonds
- Good adhesion to wood, fibreglass, gelcoat, plastics and metals
- Paintable and sandable
- Forms a watertight weather resistant seal on joints and hardware, above or below the waterline
- This product is approximately half the strength of 5200 which allows for disassembly of parts
What is 3M Marine Adhesive Sealant Fast Cure 4200 used for?
3M Marine Adhesive Sealant Fast Cure 4200 is a versatile, medium-strength polyurethane sealant designed for marine applications. It forms durable, watertight seals on various materials, including wood, fiberglass, gelcoat, plastics, and metals. Common uses encompass bonding and sealing components such as portholes, deck fittings, rub rails, screw holes, and stanchion supports. Suitable for both above and below the waterline, it allows for disassembly of parts if needed.
How long does it take for 3M 4200 Sealant to dry?
Under standard conditions (23°C and 50% relative humidity), the sealant becomes tack-free in approximately 1 to 2 hours. It cures at a rate of about 4 mm per 24 hours, with full curing typically achieved within 24 hours.
How to apply 3M 4200 Fast Cure Marine Sealant?
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Surface Preparation: Ensure surfaces are clean, dry, and free from contaminants. Light abrasion with 180- to 200-grit sandpaper can enhance adhesion.​
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Application: Cut the nozzle to the desired bead size, puncture the seal, and apply the sealant using a caulking gun. Position parts promptly and tool the sealant to the desired finish using a suitable tool or gloved finger.​
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Cleanup: Remove excess sealant with 3M General Purpose Adhesive Cleaner 08984 or a compatible solvent. Avoid using alcohol-based cleaners, as they can interfere with the curing process.​
Note: For certain substrates or conditions, a primer may be recommended to enhance adhesion and durability. Consult 3M Technical Service for specific recommendations.
What is the shelf life of 3M Marine Adhesive Sealant Fast Cure 4200?
When stored in its original, unopened container at temperatures below 27°C (80°F), the sealant has an extended shelf life. For optimal performance, always check the product label for the exact expiration date.
