

🔗 Seal it, stick it, trust it — the ultimate bond for pros who settle for nothing less!
Sikaflex-221 is a premium black polyurethane sealant and adhesive designed for multi-surface bonding and permanent elastic sealing. It cures quickly upon exposure to moisture, forming a durable, waterproof, and vibration-resistant elastomer. NSF-approved and resistant to aging, seawater, and chemicals, it’s ideal for professional-grade automotive, construction, and industrial applications.















| ASIN | B00NW5LWHA |
| Best Sellers Rank | #3,060 in Automotive ( See Top 100 in Automotive ) #21 in Automotive Fillers, Adhesives & Sealants |
| Brand Name | SIKA |
| Color | Black |
| Customer Reviews | 4.5 4.5 out of 5 stars (2,510) |
| EU Spare Part Availability Duration | 5 Years |
| Full Cure Time | 3 Hours |
| Included Components | AP Products 017-90893 Sikaflex-221, Black |
| Initial Hardening Time | 1 Hours |
| Item Form | Paste |
| Item Type Name | AP Products 017-90893 Sikaflex-221, Black |
| Item Weight | 10.1 Ounces |
| Liquid Volume | 10.1 Fluid Ounces |
| Manufacturer | SIKA |
| Material Type | Polyurethane |
| Surface Recommendation | Versatile, suitable for various surfaces |
| Unit Count | 10.1 Fluid Ounces |
| Water Resistance Level | Waterproof |
J**H
Trabaja bien. Sella correctamente. Solamente noté que fue sencillo de quitarlo después de varios meses en unas piezas revestidas de pintura esmalte
O**A
I used Sikaflex to adhere a roof wing to the back windshield of my car, and I’m seriously impressed with how well it worked. The bond is incredibly strong and feels permanent once cured. I let it set for about 24 hours before driving, and even after months of highway speeds and temperature changes, the wing hasn’t budged at all. The application was pretty straightforward, it has a thick, tacky consistency that gives you enough working time to position everything correctly before it starts to set. I’d recommend taping or clamping the part in place while it cures, because it does take a while to fully harden. Once cured, it’s flexible enough to handle vibration and movement, which is great for automotive use. One thing to note: this stuff is messy. It’s sticky, and once it gets on your hands or paint, it’s not easy to remove. Wear gloves, mask off surrounding areas, and have some cleaner or mineral spirits ready. Overall, Sikaflex delivered exactly what I needed, a strong, weatherproof, and vibration resistant bond that’s holding my roof wing securely in place. It’s not the cheapest adhesive, but it’s worth it for the strength and reliability.
H**M
Very good
A**X
Buen sellador excelente para celular y buena. Marca
K**Y
Great brand always works
Trustpilot
Hace 3 semanas
Hace 4 días