Description
Sikaflex 521UV UV Resistant LM Polyurethane Sealant - 10.3oz(300ml) Cartridge - White
Sikaflex-521 UV is a multi-purpose, UV resistant, non-sag, elastic, one-part silane-terminated polymer sealant, which cures on exposure to atmospheric moisture to form a durable elastomer. Sikaflex-521 UV is solvent and isocyanate free.
Uses:
Sikaflex-521 UV bonds well to a wide variety of substrates without the need for special pre-treatment and is suitable for making permanent, high strength elastic seals. Compatible substrate materials include wood, metals, (particularly aluminum including anodized components), sheet steels (including phosphated, chromated and zinc-plated components), metal primers and paint coatings (two-part systems), ceramic materials, plastics and glass.
Characteristics Advantages:
- Very low VOC/solvent free
- Silicone and PVC-free
- Isocyanate-free
- High electrical resistance
- Resistant to aging and weathering
WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.
The Sika Sikaflex 521UV UV Resistant LM Polyurethane Sealant is a versatile, high-performance sealing solution designed for a wide range of applications. This 10.3-ounce cartridge features a white, elastic, non-sag formulation that cures upon exposure to atmospheric moisture, transforming into a durable elastomer. Ideal for both interior and exterior use, Sikaflex-521 UV provides excellent adhesion to various substrates without requiring special pre-treatment, making it suitable for sealing joints, gaps, and seams in construction, automotive, and industrial projects.
Constructed from a silane-terminated polymer, this sealant is free from solvents, isocyanates, silicone, and PVC, ensuring safety and environmental compliance. Its low VOC content minimizes environmental impact while maintaining high performance. The sealant exhibits high electrical resistance, resistance to aging, and weathering, making it suitable for outdoor applications exposed to sun, rain, and temperature fluctuations. Its compatibility with materials such as wood, metals (including aluminum and sheet steels), ceramics, plastics, and glass allows for broad versatility in sealing diverse substrates without the need for primers or surface preparation.
Designed for durability and ease of use, Sikaflex-521 UV offers excellent elasticity, maintaining flexibility over time to accommodate joint movements. Its high-performance properties ensure long-lasting seals that resist cracking, shrinking, and deterioration, even under harsh environmental conditions. Whether sealing around windows, doors, or in automotive assemblies, this sealant provides a reliable, weather-resistant barrier that enhances structural integrity and aesthetic appeal. With its user-friendly formulation, Sikaflex-521 UV is a dependable choice for professionals seeking a high-quality, UV-resistant sealing solution that adheres well to multiple materials and withstands the test of time.
Features:
- UV resistant and weatherproof for outdoor durability
- Elastic, non-sag formulation for versatile sealing
- Solvent and isocyanate free, environmentally friendly
- Adheres well to wood, metals, ceramics, plastics, and glass without primers
- High electrical resistance and long-lasting flexibility
- Low VOC and free from silicone and PVC for safety and environmental compliance
Details
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