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🔧 Seal smart, last longer—because your projects deserve the best!
SIKA Sikaflex 1A is a premium one-component polyurethane sealant designed for durable, flexible, and weather-resistant sealing of concrete and masonry joints. It offers easy application with standard tools, strong adhesion without primers, and accommodates significant joint movement, making it ideal for both vertical and horizontal construction applications.










| ASIN | B00MH8ND16 |
| Best Sellers Rank | #61,560 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #34 in Polyurethane Adhesives #134 in Urethane Adhesives |
| Brand Name | SIKA |
| Color | WHITE |
| Customer Reviews | 4.1 4.1 out of 5 stars (54) |
| Full Cure Time | 24 hours |
| Initial Hardening Time | 6 hours |
| Item Form | Liquid |
| Item Weight | 1.9 pounds |
| Liquid Volume | 20 fluid ounces |
| Manufacturer | SIKA |
| Material Type | Polyurethane |
| Maximum Gap Fill | 0.5 inches |
| Model | SIKA-91008 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | 91008 |
| Surface Recommendation | joints, fillets, windows, door frames, reglets, flashing |
| Temperature Range | 4E+1 °F |
| UPC | 033886002981 |
| Unit Count | 20 Fluid Ounces |
| Water Resistance Level | Waterproof |
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