- Sikaflex® 221 - White polyurethane sealant - 13 oz. sausage uni-pack - Highly elastic and durable - Resistant to aging and weathering exsposure - Suitable substrate materials are wood, metals, metal primers and paint coatings (2-c systems), ceramic materials and plastics.
Sikaflex® -221 White is a high-quality multipurpose non-sag 1-c polyurethane sealant that cures on exposure to atmospheric humidity to form a durable elastomer. Meets approvals ASTM C920 types and Federal Specifications TT-S-00230C. Sikaflex® -221 is tested and classified in accordance with ANSI/UL 723 “Test for Surface Burning Characteristics of Building Materials”. Sikaflex® -221 is manufactured in accordance with ISO 9001 / 14001 quality assurance system and the Responsible Care Program.
Product Benefits
- 1-C formulation - Elastic - Low odor - Resistant to weathering exposure - Non-corrosive - Can be overpainted and sanded - Lower VOC’s - Bonds well to a wide variety of substrates - NSF registered, Proprietary Substances and Nonfood Compounds (black, gray, and white) - UL listed for potable water (black, gray, and white)
Areas of Application
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 wood, metals, metal primers and paint coatings (2-c systems), ceramic materials and plastics. Before using on transparent and pigmented materials that are prone to stress cracking, contact the Technical Service Department of Sika Industry at [email protected]. This product is suitable for experienced professional users only. Tests with actual substrates and conditions have to be performed to ensure adhesion and material compatibility.