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 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 CareProgram.
Product Benefits
1-C formulation Elastic Low odor Resistant to aging and weathering exposure Non-corrosive Can be overpainted Can be sanded Bonds well to a wide variety of substrates
Model | 221-241 |
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Size | 300 ml Cartridge |
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Qty Per Case | 24 per case |
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Part Number | 90892 |
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Application Temperature Approximate Product | 41°F - 104°F (5°C - 40° C) |
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Chemical Base | 1-C polyurethane |
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Color | Black |
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Cure Mechanism | Humidity-curing |
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Curing Speed | (see diagram 1) |
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Density (uncured) | 10.6 lb/gal depending on color |
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Elongation At Break (astm D 412) | 500% |
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Glass Transition Temperature | -49°F (-45°C) |
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Movement Accommodation Factor | 12.50% |
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Non-sag Properties | Good |
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Open Time | 45 min (73°F (23°C) / 50% r.h.) |
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Unit of Measure | EA |
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Service Temperature Permanent | -40° - 194°F (-40°-+90°C) |
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Manufacturer | Sika |
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Service Temperature 1 Hour | 284°F (140°C) |
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Service Temperature 1 Day | 248°F (120°C) |
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Shelf Life (storage Below 77°f (25°c)) | 12 months |
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Shore A-hardness (astm D 2240) | 40 |
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Shrinkage | 5% |
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Tear Propagation Resistance (astm D 624) | 34 pli |
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Tensile Strength (astm D 412) | 260 psi |
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VOC (epa Method 24) | 0.4 lb/gal (48.3 g/l) |