Description
A one-component black polyurethane adhesive/sealant that bonds well to a range of substrates and is suitable for making permanent elastic seals of high adhesive strength.
The multi-purpose Sikaflex®-221 cures on exposure to atmospheric humidity. Suitable substrates are metals, metal primers and paint coatings (2-C systems), ceramic materials and plastics.
NOTE: The user should seek manufacturer’s advice and perform tests on original substrates before using this product on materials prone to stress cracking. Sikaflex®-221 is suitable for experienced professional users only. Test with actual substrates and conditions must be performed to ensure adhesion and material compatibility.
Key Features
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
