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🔧 Seal it once, seal it right — the pro’s choice for lasting bonds!
Sikaflex-221 is a professional-grade, fast-curing polyurethane sealant and adhesive that delivers permanent elastic bonds across multiple surfaces. Its weather-resistant, waterproof formula withstands harsh conditions including UV exposure and seawater, while being NSF-approved for safe use in drinking water and food production. Easy to apply, sand, and paint, it’s the trusted solution for durable, clean, and versatile sealing and bonding.















| ASIN | B00O9VFLRS |
| Best Sellers Rank | #1,085 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2 in Polyurethane Adhesives #11 in Urethane Adhesives |
| Brand Name | SIKA |
| Color | White |
| Customer Reviews | 4.6 4.6 out of 5 stars (2,952) |
| Global Trade Identification Number | 00338860050980 |
| Included Components | AP Products 017-90891 Sikaflex-221, White |
| Item Form | Paste |
| Item Type Name | AP Products 017-90891 Sikaflex-221, White |
| Item Weight | 10.1 Ounces |
| Liquid Volume | 10.1 Fluid Ounces |
| Manufacturer | SIKA |
| Material Type | Polyurethane |
| Model | 017-90891 |
| Number of Items | 1 |
| Part Number | 0911.1270 |
| Surface Recommendation | Roof, Vent, Pipe |
| UPC | 338860050980 |
| Unit Count | 10.1 Fluid Ounces |
| Water Resistance Level | Waterproof |
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