Sikaflex®-291i is a trusted marine-grade polyurethane sealant and adhesive, designed for general sealing and bonding applications on boats and yachts.

Ideal for bedding deck hardware, sealing fittings, hatches, portlights, and interior joints, Sikaflex 291i provides excellent adhesion to most materials commonly found in marine environments, including fiberglass, metals, wood, and painted surfaces.

Sikaflex®-291i meets in addition the low spread of flame requirements set out by the International Maritime Organisation (IMO).

It remains permanently elastic, absorbs vibrations, and offers good resistance to ageing, weathering, and saltwater exposure. Supplied in a 300 ml cartridge, available in black or white, making it suitable for a wide range of visible and hidden applications onboard.