Sikaflex®-521 UV is a multi-purpose, UV resistant, non-sag, elastic, one part silane-terminated polymer sealant, which cures on exposure to atmospheric isture to form a durable elastomer. Sikaflex®-521 UV is solvent and isocyanate free. Sikaflex®-521 UV is manufactured in accordance with ISO 9001 / 14001 quality assurance system and the responsible care program.
SikaflexÒ-521 UV bonds well to a wide variety of substrates 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. Seek manufacturer’s advice before using on transparent materials that are prone to stress cracking.
Characteristics / Advantages:
Bonds well to a wide variety of substrates without the need for special pre-treatment.
Resistant to UV radiation
Very low VOC/solvent free
Silicone and PVC-free
High electrical resistance
Resistant to aging and weathering