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Sikaflex-221 is a premium black polyurethane sealant and adhesive that cures on moisture exposure to form a durable, elastic bond. Its versatile formula adheres to a wide range of materials including metals, plastics, ceramics, and coated surfaces. Resistant to aging, seawater, and chemicals, itโs NSF-approved for safe use in drinking water and food environments. Ready-to-use in a convenient cartridge, it offers sandable and paintable finish options, making it the go-to solution for professional-grade permanent seals and bonds.















| ASIN | B00NW5LWHA |
| Batteries | 1 Nonstandard Battery batteries required. |
| Best Sellers Rank | #690 in Automotive ( See Top 100 in Automotive ) #6 in Automotive Fillers, Adhesives & Sealants |
| Brand | SIKA |
| Customer Reviews | 4.5 4.5 out of 5 stars (2,845) |
| Date First Available | 16 January 2015 |
| Item Weight | 286 g |
| Item model number | SIKA-90893 |
| Manufacturer | SIKA |
| Manufacturer Part Number | 90893 |
| Model | 017-90893 |
| Product Dimensions | 30.48 x 5.08 x 30.48 cm; 286.33 g |
| Special Features | Stain resistant |
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