Sikaflex 221 is a multi-purpose 1-component polyurethane adhesive / sealant that bonds well to a wide variety of substrates like metals, metal primers and paint coatings (2-component systems), ceramic materials and plastics. It is suitable for making permanent elastic seals.

Sikaflex 221 bonds well to a wide variety of substrates and is suitable for making permanent elastic seals . Suitable substrate materials are metals, metal primers and paint coatings (2-component systems), ceramic materials and plastics. It is ideally used for internal sealing and simple bonding applications. Seek manufacturer’s advice and perform tests on original substrates before using Sikaflex-221 on materials prone to stress cracking.

Product benefits

• Bonds well to a wide variety of substrates
• Resistant to ageing
• Can be sanded and painted
• Passes EN45545-2 R1/R7 HL3
• Non-corrosive
• Low odor

Important: This product is suitable for experienced professional users only. Test with actual substrates and conditions have to be performed to ensure adhesion and material compatibility.

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