3M 4200 Fast Cure Polyurethane/Adhesive Sealant, Cures fast and forms a watertight seal between joints and hardware.

Cures fast and forms a watertight seal between joints and hardware.
One-part, all-purpose sealant chemically reacts with moisture and forms flexible, watertight, weather-resistant seals on joints and hardware. Can be used above or below the waterline; approximately half the strength of 3M’s 5200, which allows for eventual dissasembly of parts. Note: Can be softened by some teak cleaners and sealers and is not recommended for sealing teak decks.

Key features

• Forms watertight, weather-resistant seals
• Chemically reacts with moisture to deliver flexible bonds
• Can be used above or below the waterline
• Cleans up with mineral spirits or kerosene

Specifications

• Formulation: One-part fast-cure polyurethane adhesive/sealant
• Recommended Usage: Fiberglass, wood, metal, some plastics, above or below water
• Material Incompatibilities: Acrylics, ABS, Lexan
• Cure Time: Tack-free: 2hrs.; Complete cure: 24hrs.
• Cleanup: Mineral spirits or kerosene
• Removal: Mechanical removal
• Tensile strength: 300psi