• Highly elastic and multi-purpose, Sikaflex-221 is suitable for making permanent elastic seals of high adhesive strength.• PERFORMANCE: 1-C formulation. NSF approved for drinkable water and incidental food contact. Can be sanded and painted.• DURABILITY: Resistant to weathering exposure. Lower VOC’s.• SUPPORTS: Bonds well to a wide variety of substrates: wood, metals, metal primers and paint coatings (2-c systems), ceramic materials and plastics.• APPLICATION: Used for the panel sealing and bonding, root base sealing, nacelle sealing, tower sealing, installation & perimeter sealing, general metal construction sealing, metal panels, roofing, flooring bonding, cabinets, flooring and trim.
Sikaflex-221 is a high-quality multi-purpose non-sag 1-c polyurethane sealant/adhesive that cures on exposure to atmospheric humidity to form a durable elastomer. Meets approvals ASTM C920 types Sikaflex-221 is tested and classified in accordance with ANSI/UL 723 “Test for Surface Burning Characteristics of Building Materials”.
*Always refer to Current Product Data Sheet and MSDS for detailed performance specifications prior to use.
Sikaflex-221 is weather-resistant, sandable, paintable, and approved for potable water.
Sikaflex-221 bonds well to a wide variety of substrates and is suitable for making permanent elastic seals of high adhesive strength. Suitable materials are wood, metals, metal primers and paint coatings, ceramic materials and plastics.