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🔧 Seal it once, seal it right — the pro’s choice for permanent bonds!
Sikaflex-221 is a professional-grade, black polyurethane sealant and adhesive offering permanent elastic seals. It bonds to a wide range of surfaces including metal, plastics, ceramics, wood, and glass. With a quick 3-hour cure time, waterproof and weather-resistant properties, and NSF approval for drinking water and food environments, it delivers durable, safe, and versatile performance in both industrial and home applications.
| ASIN | B00NW5LWHA |
| Best Sellers Rank | #930 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2 in Polyurethane Adhesives |
| Brand Name | SIKA |
| Color | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (3,054) |
| Full Cure Time | 3 hours |
| Included Components | Sealant |
| Item Form | Paste |
| Item Type Name | Sealant |
| Item Weight | 10.1 ounces |
| Liquid Volume | 10.1 fluid ounces |
| Manufacturer | SIKA |
| Material Type | Polyurethane |
| Model | SIKA-90893 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | 90893 |
| Surface Recommendation | Metal, Wood, Glass |
| Unit Count | 10.1 Fluid Ounces |
| Water Resistance Level | Waterproof |
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