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💪 Seal Smart, Live Leak-Free!
Flex Caulk is a cutting-edge hybrid polymer sealant designed for professional-grade waterproofing and weatherproofing. Its innovative adjustable nozzle allows precise, gun-free application, while its advanced formula adheres to virtually any surface—wet or dry—without shrinking or cracking. Fully paintable and UV resistant, this 9 oz 2-pack is your go-to solution for durable, mess-free sealing across indoor and outdoor projects, from windows to marine use.












| ASIN | B0D2FKVQDK |
| Best Sellers Rank | #114 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Adhesive Caulk |
| Brand | Flex Seal |
| Brand Name | Flex Seal |
| Color | White |
| Customer Reviews | 4.5 out of 5 stars 431 Reviews |
| Included Components | Flex Caulk, White, 9 oz, 2-Pack |
| Item Form | Liquid |
| Item Weight | 9 Ounces |
| Liquid Volume | 18 Fluid Ounces |
| Manufacturer | Swift Response, LLC |
| Material Type | Polymer |
| Surface Recommendation | Window |
| UPC | 810129871098 |
| Unit Count | 18.0 Fluid Ounces |
| Water Resistance Level | Waterproof |
G**S
Great product, very easy to use.
Bought this product to seal a tub and tub walls. This was one of the easier applications I had to do, loved the built-in caulk gun with thickness selector. Made the job very simple, and the product dried relatively quickly. I would definitely buy this product again for other home projects.
R**T
Fantastic
This stuff is fantastic. My second time ordering. Easy to use and works as advertised.
C**N
Flex Caulk
As advertised Works great Fast delivery Good deal
R**R
The more you use the texture gets more smoother and in line
Goood product works well ,easy application
C**H
Compact and ready to use
They are handy and easy to use
K**Y
Easy to use even for a first time caulker!
Ok, Id never caulked before so I wasnt sure how its supposed to work, but this was really easy! You just push the little thingy and it comes out in a ribbon. I thought I would need alot more than I did need, its good stuff!
M**C
Great
No mess no fuss in using flex caulk. It sealed water seepage into my garage. No smell , very smooth application
A**R
Messy messy
Caulk is good; I bought a two-pack at that price, and everything should work great. The nozzle on top, the pressure of the can pushing it out, broke off. I had to use it because it's so expensive. It was just very difficult and very messy.
Trustpilot
2 weeks ago
1 month ago