SIKA Sikaflex 521 UV 300ml is a premium white sealant and adhesive that provides outstanding weather resistance and flexibility for both interior and exterior applications. Its isocyanate-free formulation ensures a safer and environmentally friendly performance while offering exceptional adhesion to a wide range of construction materials. Designed to withstand harsh UV exposure, this sealant maintains its color and integrity over time, making it an ideal solution for sealing joints and bonding substrates in various building projects. With rapid curing and a durable finish, it delivers reliable long-term performance even under extreme temperature variations and weather conditions.

Key Features

• Isocyanate-free formulation for enhanced safety and environmental compliance
• Superior weather and UV resistance for prolonged durability outdoors
• High elasticity ensures effective sealing and flexibility with joint movement
• Clean white finish for improved aesthetics in visible applications
• Versatile enough for a wide range of substrates including concrete, wood, glass, and metal
• Suitable for both interior and exterior use in residential and commercial projects
• Fast curing for efficient application and immediate load-bearing capacity

Specifications

• Product Name: SIKA Sikaflex 521 UV
• Volume: 300ml
• Color: White
• Formulation: Isocyanate-Free Weather Resistant Sealant & Adhesive
• Application: Interior & Exterior
• Weather Resistance: UV resistant with enhanced longevity
• Flexibility: High elasticity to accommodate structural movement
• Recommended Substrates: Concrete, Wood, Glass, Metal, and more