Sikaflex®-221 is a high-quality multi-purpose non-sag 1-c polyurethane sealant that cures on exposure to atmospheric humidity to form a durable elastomer. For US: Meets approvals ASTM C920 types and Federal Specifications TT-S-00230C. Sikaflex®-221 is manufactured in accordance with ISO 9001 / 14001, quality assurance system and with the responsible care program.
Resistant to ageing and weathering exposure
Can be overpainted
Can be sanded
Bonds well to a wide variety of substrates
NSF-approved for incidental food contact and potable water. Black and White only.
Areas of Application:
Sikaflex®-221 bonds well to a wide variety of substrates and is suitable or 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