Bostik® 940 FS Fast Set Marine Adhesive Sealant

Bostik® 940 FS Fast Set is a high-performance marine-grade adhesive sealant engineered for durable, flexible bonding and sealing on boats, marine structures, and demanding industrial applications. Its fast-curing SMP technology provides strong primerless adhesion and outstanding resistance to water, UV, and harsh environmental conditions.

• Fast-setting marine adhesive sealant for structural and elastic bonding
• Excellent primerless adhesion to fiberglass, metals, wood, and composites
• Highly flexible formulation absorbs vibration and structural movement
• UV-, saltwater-, and weather-resistant for long-term marine durability
• Solvent-free, isocyanate-free, and low-VOC SMP formulation
• Paintable after curing for a clean, uniform finish

Designed specifically for marine environments, Bostik® 940 FS excels in applications requiring strong, waterproof bonding and rapid handling strength. Its fast-set chemistry shortens installation time while maintaining high elasticity to withstand hull flexing, vibration, and temperature cycling. Ideal for above- and below-waterline bonding, deck hardware installation, hatch and rail sealing, hull-to-deck joints, and composite fabrication, this sealant cures to a durable elastomer resistant to salt spray, moisture, UV exposure, and environmental extremes. With smooth tooling, low odor, and excellent longevity, Bostik® 940 FS Fast Set provides reliable professional performance for boatbuilders, repair yards, and industrial marine operations.

Technical Specifications

• Brand: Bostik®
• Technology: Silyl Modified Polymer (SMP)
• Type: Marine Adhesive Sealant – Fast Set
• Cure Mechanism: Moisture curing
• Properties: Flexible, durable, UV-resistant, waterproof
• Substrates: Fiberglass, metals, wood, composites, plastics
• Features: Fast-setting, solvent-free, isocyanate-free, low-VOC, paintable
• Applications: Marine bonding & sealing, boat construction, accessories, joints, hardware installation