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🛡️ Seal it like a pro, protect it for life!
Flex Seal Liquid MAX is a professional-grade, 2.5-gallon liquid rubber coating that delivers a flexible, waterproof, and UV-resistant seal. Ideal for roofs, basements, RVs, and marine use, it applies smoothly and forms a durable barrier against water, air, and chemical exposure—perfect for long-lasting repairs and heavy-duty protection.
| ASIN | B0916RKHLH |
| Best Sellers Rank | #178,101 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #823 in Hardware Sealers |
| Brand Name | Flex Seal Liquid |
| Color | Black |
| Compatible Material | Rubber |
| Customer Reviews | 4.3 4.3 out of 5 stars (115) |
| Global Trade Identification Number | 00850017897434 |
| Included Components | Item |
| Item Dimensions | 26.7 x 25.4 x 25.4 centimeters |
| Item Form | Liquid |
| 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 | LFSMAXBLK |
| Surface Recommendation | Roof |
| UPC | 850017897434 |
| Unit Count | 320 Fluid Ounces |
| Water Resistance Level | Waterproof |
A**L
Flex Seal Liquid MAX is a game-changer for sealing and waterproofing projects. The 2.5-gallon size provides great coverage, making it ideal for roofs, basements, RVs, and more. It applies smoothly, dries to a flexible and durable finish, and holds up well against water and UV exposure. Perfect for long-lasting repairs with a strong, watertight seal. A must-have for DIY and professional use!
M**G
You’ve seen the commercials. I used this to fill the 3/4” to 1.5” cracks in my asphalt driveway. I’ve used the Black Flex Seal Liquid for as long as ten years to fill the cracks. I never had any fail. I live in a harsh winter area. It’s expensive and you have to come up with your own system as to how to apply. I transfer from the big container to a Pyrex 16oz measuring cup.
A**.
I've had a leaky balcony issue for a long time that leaked through to my kitchen ceiling. I used a little can of flex seal for the bad spots and it worked so well that I bought the bigger container and did my entire balcony myself. Didn't leak through all of those bad rain storms we've had lately. This stuff is freaking amazing!!!!!
A**E
Works
J**W
works good