Sikaflex 521 UV 300ml Noir - Sika

What is Sikaflex-521 UV?

Sikaflex-521 UV in black or white(the choice is yours) is a polyurethane-based hybrid adhesive and sealant, specially formulated for exterior applications requiring high UV resistance. Perfect for professional and amateur vehicle fitters, this product guarantees solid fixings and long-lasting watertight joints.

An innovative product for maximum waterproofing

Sikaflex-521 UV is designed to offer excellent adhesion to a variety of materials including metal, plastic, wood and glass. Its UV and weather resistance make it an ideal choice for outdoor applications. What's more, it remains flexible even after curing, allowing it to absorb vibration and movement without compromising watertightness.

Multiple uses

This sealant is ideal for bodywork joints, panel joints, roof repairs and seals around windows and doors.

Technical characteristics of Sikaflex 521 UV

• Formulation: Polyurethane-based hybrid adhesive and sealant
• Colour (choice of): Black or white
• Skin formation time: 30 minutes
• Full cure: 24 hours
• Service temperature: -40°C to +90°C
• UV resistance: Excellent
• Flexibility: High, even after curing
• Adhesion: Metal, plastic, wood, glass and other common materials

Instructions for use

1. Surface preparation: Clean and dry the surfaces to be bonded.
2.Application: Apply the sealant directly from the cartridge to the prepared surface.
3.Smoothing: Smooth the joint with a suitable tool before skinning occurs.
4.Drying: Leave to dry for 24 hours for complete hardening.

What are the advantages of Sikaflex 521 UV sealant?

• Perfect seal: Ensures a durable, weather-resistant seal.
• Flexibility: Maintains flexibility to absorb vibration and movement.
• Ease of application: Direct application and easy smoothing.
• Durability: Resistant to UV and extreme weather conditions.

Transform your design projects with Sikaflex-521 UV. Offering flexibility, durability and a perfect seal, it is the ideal ally for all your vehicle sealing work.