Sikaflex®-521 UV

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.

  • Very low VOC/solvent free
  • Silicone and PVC-free
  • Isocyanate-free
  • High electrical resistance
  • Resistant to aging and weathering