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💧 Seal it, protect it, forget it—Flex Seal Liquid has you covered!
Flex Seal Liquid Rubber Sealant Coating is a 320 oz black liquid rubber formula designed for fast, flexible, and waterproof sealing. It applies smoothly via brush, roll, dip, or pour, offering UV resistance and protection against rust and corrosion. Ideal for a wide range of surfaces including roofs, basements, RVs, gutters, and masonry, this product ensures durable, all-weather protection with a 1-year limited warranty.












| ASIN | B0916RKHLH |
| Best Sellers Rank | #153,906 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #516 in Hardware Sealers |
| Brand Name | Flex Seal Liquid |
| Color | Black |
| Compatible Material | Rubber |
| Customer Reviews | 4.3 4.3 out of 5 stars (118) |
| Global Trade Identification Number | 00850017897434 |
| Included Components | Item |
| Item Dimensions | 10.5 x 10 x 10 inches |
| Item Form | Liquid |
| Item Highlight | Stops leaks fast, brush, roll, dip or pour on, UV resistant, prevents rust, corrosion, roof, basement, RV, gutters, masonry |
| Item Type Name | Flex Liquid MAX Black 2.5 Gallons |
| Item Weight | 20 pounds |
| Manufacturer | Swift Response, LLC |
| Material Type | Rubber |
| Model | LFSMAXBLK02 |
| Number of Items | 1 |
| Part Number | LFSMAXBLK02 |
| Style Name | Liquid Rubber |
| Surface Recommendation | Roof |
| UPC | 850017897434 |
| Unit Count | 320 Fluid Ounces |
| Warranty Description | 1 Year Limited |
| Water Resistance Level | Waterproof |
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