3M 5200 Polyurethane Adhesive/Sealant, Black

Provides exceptionally strong adhesion, yet stays flexible after it cures; may be used above or below the waterline. Ideal for underwater thru-hull fittings, hull-to-deck joints, portholes and bonding wood to fiberglass. Goes on smoothly, won’t sag, and remains workable up to four hours. Cures in 5–7 days with no shrinking. 

Key features 

• Ideal for bedding hull-to-deck joints or other long-term applications
• Strong, flexible adhesive for virtually permanent bonding and sealing above and below waterline
• Adhesive bonds and seals fiberglass deck to hull, wood to fiberglass
• chemically reacts with moisture to deliver strong, flexible bonds
• Forms watertight, weather-resistant seals on joints and boat hardware

• Formulation: One-part polyurethane adhesive/sealant 
• Recommended Usage: Permanent bonding, above and below water. Extremely strong & flexible 
• Material Incompatibilities: Plastics (ABS, Lexan) 
• Cure Time: Tack-free: 48hrs.; Complete cure: 5-7 days; moisture-activated cure 
• Cleanup: Mineral spirits or kerosene 
• Removal: Mechanical removal
• Tensile strength: 700psi