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🔧 Seal it once, seal it right — the pro’s choice for permanent perfection!
Sika Sikaflex-221 is a premium white polyurethane sealant and adhesive designed for permanent elastic seals on diverse surfaces including metal, plastic, and ceramics. Its age-resistant, waterproof formula withstands harsh elements like seawater and acids, while being NSF-approved for safe use in drinking water and food environments. Packaged in easy-to-use 10.1 fl oz cartridges, it offers professional-grade bonding with sandable and paintable finish options, making it the go-to solution for durable, clean, and reliable sealing.










| ASIN | B0CRS12FHB |
| Best Sellers Rank | #1,022 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #3 in Polyurethane Adhesives #14 in Urethane Adhesives |
| Brand | SIKA |
| Brand Name | SIKA |
| Color | White |
| Customer Reviews | 4.8 out of 5 stars 6 Reviews |
| Global Trade Identification Number | 10033886005095 |
| Included Components | Sealant |
| Item Form | Oz |
| Liquid Volume | 10.1 fluid ounces |
| Manufacturer | SIKA |
| Material Type | Polyurethane |
| Model | 90891 |
| Number of Items | 24 |
| Part Number | 90891 |
| Surface Recommendation | Metal, Wood, Glass |
| Unit Count | 242.4 Fluid Ounces |
| Water Resistance Level | Waterproof |
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