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🔧 Seal it once, seal it right — the pro’s choice for permanent perfection!
Sikaflex-221 is a professional-grade, multi-purpose polyurethane sealant and adhesive in a convenient 10.1 fl oz cartridge. It delivers permanent elastic seals and bonds to metals, plastics, ceramics, and more, curing fully in just 3 hours. Waterproof, age-resistant, and NSF-approved, it’s designed for durable, safe, and versatile use in demanding industrial and household applications.










| ASIN | B00NW5LWHA |
| Best Sellers Rank | #1,165 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2 in Polyurethane Adhesives |
| Brand | SIKA |
| Brand Name | SIKA |
| Color | Black |
| Customer Reviews | 4.6 out of 5 stars 3,071 Reviews |
| 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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