SKU: CW67312
UPC: 338860052724
MPN: 90923
Sika Sikaflex® 291 Fast Cure Adhesive & Sealant in a 10.3oz cartridge is a one-component marine-grade polyurethane that sets a new standard for speed-critical bonding applications on the water. Built specifically for boat builders and marine repair professionals, this fast-cure formulation eliminates the extended downtime associated with traditional marine adhesives, allowing crews to move through construction schedules and field repairs with minimal wait time between assembly steps.
The polyurethane elastomeric chemistry delivers exceptional adhesion to the materials that dominate modern boat construction—gelcoat, fiberglass, and composite substrates—without requiring primer on most surfaces. The black color blend allows repairs and permanent bonds to blend visually with dark hull interiors and through-hull installations. At 300ml per cartridge, each unit covers general-purpose sealing and light-duty structural bonding tasks across deck joints, window frames, cabin sole transitions, and hardware mounting. The controlled cure window balances speed with workability, giving technicians a practical window to position components before the material begins to set.
Weekend fishermen handling routine maintenance and offshore operations undertaking significant refit work both benefit from a product engineered to reduce project timelines without sacrificing reliability. Salt-air environments demand adhesives rated for prolonged marine exposure; this formulation withstands the corrosive challenges of extended wet storage and operational saltwater spray. The cartridge format fits standard caulking guns, making application straightforward for DIY boat owners and professional yards alike. For anyone performing fiberglass repairs, sealing deck hatches, or bonding structural components in a marine setting, the Sikaflex 291's combination of fast cure, proven marine adhesion, and all-purpose versatility addresses the practical reality that time spent waiting for adhesive to cure is time not spent launching or fishing.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.
