Sikaflex
Sikaflex 291i Marine Adhesive & Sealant 300ml
A trusted all-purpose marine sealant for strong, flexible, waterproof bonding.
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Sikaflex 291i Marine Adhesive & Sealant 300ml is a high-performance polyurethane sealant widely used in boat building and maintenance. It provides durable, elastic bonding and sealing across a wide range of marine applications.
Key benefits
- Strong, flexible bond suitable for marine environments
- Can be used above and below the waterline
- Excellent adhesion to wood, metal, GRP, and plastics
- Resistant to saltwater and weathering
- Paintable and sandable once cured
- One-component, easy-to-apply cartridge system
Ideal for
- Bedding deck hardware and fittings
- Sealing joints (hull, keel, transom, fittings)
- Bonding marine components and fixtures
- General-purpose sealing and repairs onboard
Sikaflex 291i Marine Adhesive & Sealant 300ml is a versatile, strong sealant designed for bonding and sealing in marine environments. It offers excellent weather resistance, durability, and flexibility, perfect for boats and marine applications.
Why buy from Marine Chandlery?
- UK marine specialists, based in North Shields
- Next-day UK delivery available
- Same-day collection from our store
- Expert advice before and after purchase
- Carefully selected marine-grade products
- Secure checkout & trusted payment options










