Sika 90927 Sikaflex-291 LOT Marine Polyurethane Adhesive Sealant Black 10.3oz

Sika Sikaflex-291 LOT is a premium one-component marine polyurethane adhesive and sealant designed specifically for applications requiring extended working time. This professional-grade marine sealant combines exceptional strength with superior flexibility, making it ideal for demanding marine environments where movement and vibration are constant factors.

Key Features:

• Extended open time with slower skin formation allows for longer working time and repositioning
• High-strength bonding nearly equivalent to standard Sikaflex-291 with enhanced flexibility
• Excellent adhesion to a wide variety of marine substrates including fiberglass, wood, metals, and composites
• Superior resistance to saltwater, UV exposure, weathering, and marine chemicals
• Remains permanently elastic to accommodate joint movement and thermal expansion
• Non-sag formulation ideal for vertical and overhead applications
• Black color for professional appearance and UV protection

Common Applications:

• General sealing throughout the vessel above and below the waterline
• Hull seams and deck-to-hull joints requiring flexible bonding
• Through-hull fittings and penetrations
• Bedding deck hardware, cleats, stanchions, and port lights
• Rub rail installation and repair
• Sealing hatches, windows, and cabin fixtures

The 10.3 oz cartridge format is compatible with standard caulking guns for easy application. Sikaflex-291 LOT cures to form a durable, watertight seal that maintains its integrity through years of marine exposure, making it a trusted choice for professional boat builders, marine technicians, and serious DIY boat owners.