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🔧 Seal smart, last longer — the pro’s choice for flexible, weatherproof joints!
Sikaflex 1A is a premium one-component polyurethane sealant designed for durable, flexible sealing of concrete and masonry joints. It cures in 120 hours to form a waterproof, elastomeric bond that accommodates ±35% joint movement without sagging. Its strong adhesion requires no primer, making it ideal for vertical and horizontal applications like windows, doors, and roofing, with excellent resistance to weathering and aging.










| ASIN | B00MH8OIXS |
| Best Sellers Rank | #38,611 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #327 in Industrial Sealants #373 in Caulk #29,366 in Hardware |
| Brand Name | SIKA |
| Color | ALUMINUM GRAY |
| Customer Reviews | 4.8 4.8 out of 5 stars (10) |
| Full Cure Time | 120 Hours |
| Included Components | 20 oz sausage |
| Item Form | Paste |
| Item Weight | 20 Ounces |
| Liquid Volume | 590 Milliliters |
| Manufacturer | SIKA |
| Material Type | Polyurethane |
| Maximum Gap Fill | 1.2 Inches |
| Model | 91002 |
| Number of Items | 1 |
| Part Number | 91002 |
| Surface Recommendation | Concrete |
| Tensile Strength | 175 Pounds Per Square Inch |
| UPC | 033886003001 |
| Unit Count | 1.0 Count |
| Water Resistance Level | Waterproof |
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