Description
Sikaflex® -521 UV is a multi-purpose, weathering resistant, non-sag, elastic, one-part silane-terminated polyurethane hybrid sealant, which cures on exposure to atmospheric moisture to form a durable elastomer. Sikaflex® -521 UV is isocyanate free and contains no added solvents. Sikaflex® -521 UV is manufactured in accordance with ISO 9001 / 14001 quality assurance system and the responsible care program.
