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Sikaflex 221 bonds well to a wide variety of substrates and is suitable for making permanent, high adhesive strength elastic seals. Use 221 on substrate materials wood, metals, metal primers and paint coatings (2c or 2 part systems), ceramic materials and plastics.
|Sealant type: Polyurethane||Temperature: -40 to 195 F|
|Time until tack free: 60 min||Full cure time: 60 min to 10 days|
|Tensile Strength: 260||Hardness: Shore A 40-45|
|Specific Gravity: 1.27||Elongation: 500%|
Sikaflex-221 is a high-quality multi purpose non-sagging 1-component polyurethane sealant that cures on exposure to atmospheric humidity to form a durable elastomer.