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🔧 Seal it like a pro, cure it like a boss!
Sika Sikaflex-221 is a premium gray polyurethane sealant/adhesive delivering fast curing, exceptional elasticity, and strong adhesion across multiple surfaces including wood, metal, plastic, and ceramic. With NSF approval for incidental food contact and weather-resistant durability, it’s the go-to solution for professional-grade sealing and bonding in construction and repair projects.















| ASIN | B01GDN4AAI |
| Best Sellers Rank | #5,064 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #23 in Silicone Sealers |
| Brand | SIKA |
| Brand Name | SIKA |
| Color | Aluminum Gray |
| Colour | Aluminum Gray |
| Customer Reviews | 4.5 out of 5 stars 2,966 Reviews |
| Full Cure Time | 5-7 Days |
| Full cure time | 5-7 Days |
| Included Components | Sealant |
| Initial Hardening Time | 2 Hours |
| Initial hardening time | 2 Hours |
| Item Form | Liquid |
| Item Type Name | Sealant |
| Item Weight | 350 Grams |
| Item weight | 350 Grams |
| Liquid Volume | 10.3 Fluid Ounces |
| Liquid volume | 10.3 Fluid Ounces |
| Manufacturer | Sika |
| Material Type | Polyurethane |
| Maximum Gap Fill | 1 Inches |
| Model | SIKA-90892 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | 90892 |
| Surface Recommendation | Metal, Plastic, Wood, Ceramic |
| Temperature Range | 40-100 Degrees Fahrenheit |
| UPC | 033886005104 |
| Unit Count | 10.1 Milliliters |
| Water Resistance Level | Water Resistant |
D**B
The best
Best adhesive sealant I've ever used. I've gone through many tubes of this. It's never let me down except when removing it lol!
A**R
As advertised
Good quality
J**O
Excelente
Excelente producto sella muy bien ya no se metió el agua
O**A
Perfect for automotive use
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
Very good
A**S
Can't get any better!
Holds and seals almost anything. Good product at a good price.
A**X
Llego muy raido
Buen sellador excelente para celular y buena. Marca
Trustpilot
2 weeks ago
1 month ago