Sikaflex®-221

1-component adhesive sealant

Sikaflex®-221 is a high-quality multi-purpose 1-component polyurethane adhesive / sealant that cures on exposure to atmospheric humidity. It is suitable for internal sealing and simple bonding applications.  

  • Bonds well to a wide variety of substrates
  • Resistant to ageing
  • Can be painted
  • Can be sanded
  • Non-corrosive
  • Low odour
  • NSF-approved for incidental food contact
  • Potable water approved (meets AS4020 requirements)