Sikaflex 291i Marine Adhesive & Sealant 300ml

A trusted all-purpose marine sealant for strong, flexible, waterproof bonding.

SKU: SA-291-BL In stock

£18.95 £22.00 Save £3.05

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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

Pro tip: Apply to clean, dry surfaces and allow proper curing time—cool or damp conditions will slow the curing process and affect performance.

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.