Sikaflex 291i is the go-to marine sealant for mounting hardware on dinghies and other open sailing boats. Whether you are installing hiking strap fittings, cleats, fairleads, bailers, blocks or any other deck hardware, Sikaflex 291i ensures a watertight, durable and vibration-resistant seal around screws and fittings.

This multipurpose 1-component polyurethane sealant bonds extremely well to common marine materials such as wood, aluminium, stainless steel, GRP and coated surfaces. It is designed to remain flexible, resist ageing and withstand constant exposure to water and UV light. Perfect for sealing new screw holes in the hull or re-installing deck fittings without risking leaks.

Sikaflex 291i is IMO approved for low flame spread and provides reliable performance for both professional and recreational sailors.

Key Features

• Ideal for mounting hardware on dinghies and small open boats

• Perfect for sealing new screws going into the hull

• Suitable for hiking strap fittings, cleats, fairleads, blocks, bailers, etc.

• Strong adhesion to GRP, wood, metals and marine coatings

• Elastic, vibration-resistant and long-lasting

• Weather, UV and ageing resistant

• Low odour, non-corrosive and sandable/overpaintable

• Not suitable for stress-crack-sensitive plastics (PMMA, PC)