SIKAFLEX 521 UV White 300ml Marine & Caravan Sealant Adhesive
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SIKAFLEX 521 UV White 300ml Marine & Caravan Sealant Adhesive
SIKAFLEX 521 UV is a premium one-component STP (Silane Terminated Polymer) sealant and adhesive designed for exterior sealing and bonding applications exposed to harsh weather conditions. Engineered with excellent UV and weather resistance, it is widely used throughout the marine, caravan, RV, transport and construction industries where long-term durability is essential.
Unlike traditional polyurethane sealants, Sikaflex 521 UV provides outstanding resistance to sunlight, ageing and environmental exposure while maintaining flexibility and adhesion across a wide range of substrates. It is suitable for sealing joints, bonding components and weatherproofing applications where appearance and longevity are important.
The non-corrosive formulation adheres well to many common materials including metals, plastics, painted surfaces, timber and composites, making it a versatile solution for marine fit-outs, caravan manufacturing, vehicle body construction and general industrial assembly.
Key Features
- Excellent UV Resistance: Designed for long-term exterior exposure without premature degradation.
- Weather Resistant: Withstands harsh environmental conditions, moisture and temperature fluctuations.
- Sealant And Adhesive In One: Suitable for both bonding and sealing applications.
- Highly Flexible: Accommodates vibration, movement and thermal expansion.
- Wide Substrate Compatibility: Bonds to metals, plastics, composites, timber and painted surfaces.
- Non-Corrosive Formula: Suitable for sensitive materials and modern construction applications.
- Marine And Caravan Suitable: Widely used throughout marine, RV and transport industries.
- Professional Grade Performance: Trusted by manufacturers, repairers and installers worldwide.
ADDITIONAL INFORMATION
- Brand: SIKA
- MPN: 54864
- Product: Sikaflex 521 UV
- Type: STP Sealant And Adhesive
- Colour: White
- Size: 300ml Cartridge
- Application: Sealing and bonding for exterior exposed applications.
- Suitable Surfaces: Metals, painted surfaces, plastics, composites, timber and construction materials.
- Industry Use: Marine, caravan, RV, transport, construction and industrial assembly.
- UV Resistance: Excellent long-term UV and weather resistance.
- Movement Capability: Flexible cured seal suitable for vibration and movement.
- Paintable: Yes, subject to coating compatibility testing.
- Professional Use: Yes
- DIY Suitable: Yes