Sikaflex Multi-Purpose One Component Polyurethane Sealant/Adhesive

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Sikaflex 221 One-Component Adhesive Sealant

Bonds well to a wide variety of substrates and is suitable for making permanent, high adhesive strength elastic seals. Use 221 on substrate materials wood, metals, metal primers and paint coatings (2c or 2 part systems), ceramic materials and plastics.


  • 1-Component Formulation (1C)
  • Elastic
  • Low Odor
  • Resistant to aging and weathering exposure
  • Non-corrosive
  • Can be painted over
  • Can be sanded
  • Bonds well to a wide variety of substrates
  • NSF-approved for incidental food contact and potable water
  • 10 oz.

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WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to