Sikaflex®-221

Sikaflex®-221 is a high-quality multi-purpose non-sag 1-c polyurethane sealant/adhesive  that cures on exposure to atmospheric humidity to form a durable elastomer.  Meets approvals ASTM C920 types  Sikaflex®-221 is tested and classified in accordance with ANSI/UL 723 “Test for Surface Burning Characteristics of Building Materials”.

  • Highly elastic and durable
  • Resistant to aging and weathering exposure
  • Non-corrosive
  • Can be sanded and overpainted
  • NSF registered, Proprietary Substances and Nonfood Compounds (black, gray, and white)
  • UL listed for potable water (black, gray, and white)