Description Sikaflex 221 (Black) 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. Sikaflex?-221 bonds well to a wide variety of substrates and is suitable for making permanent elastic seals of high adhesive strength. Suitable substrate materials are metals, metal primers and paint coatings (2-C systems), ceramic materials and plastics. Test with actual substrates and conditions have to be performed to ensure adhesion and material compatibility. High quality polyurethane sealant Bonds metal to metal Fantastic in Marine Applications Remains permanently elastic High Bond Strength Can be Sanded Can?be Painted Applications?for Sika 221 – 300ml Adhesive & Sealant: Works on Aluminium Works on Steel Odorless Non Staining
