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💪 Seal it once, seal it right—flex your fix with Flex Caulk!
Flex Caulk is a premium 100% silicone sealant designed for both indoor and outdoor use, delivering waterproof, weatherproof, and UV-resistant protection. Its innovative no-gun aerosol design with an adjustable trigger flow nozzle ensures precise, mess-free application. Ideal for a wide range of surfaces including tile, glass, wood, and marine environments, this 6.5 oz tube offers durable, flexible sealing that won’t shrink, crack, or become brittle—perfect for professionals and DIYers seeking long-lasting, reliable results.
| ASIN | B0F337L4W8 |
| Best Sellers Rank | #114 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Adhesive Caulk #9 in Industrial Sealants #453 in Hardware |
| Brand Name | Flex Seal |
| Color | White |
| Customer Reviews | 4.6 4.6 out of 5 stars (122) |
| Full Cure Time | 24 Hours |
| Included Components | Flex Caulk, Silicone, White, 6.5 oz, 1-Pack |
| Item Form | Aerosol |
| Liquid Volume | 6.5 Fluid Ounces |
| Manufacturer | Swift Response, LLC |
| Material Type | Silicone |
| Surface Recommendation | Porcelain, tile, metal, glass, fiberglass, wood, granite, stone, marble, fabric, upholstery, paper, and just about any other surface that is free of grease and oil. |
| UPC | 810129871609 |
| Unit Count | 1.0 Count |
| Water Resistance Level | Waterproof |
B**O
Great product!
Very good product, easy to apply, but read the instructions first—the applicator takes some finesse to use. There is a strong vinegar type odor, but it cleans up easy with water and a paper towel!
J**E
super easy to use
This is hands down the easiest to use. No need to use a caulking gun. The caulk comes out uniform and consistent. I sealed 2 bathrooms first then save it to use later for the last bathroom. The consistency remained the same. Cleanup was super easier and has been the fastest that I've completed sealing all the bathrooms. Would highly recommend.
L**G
LUV this
I really liked this. I used it to re-caulk the top of an exterior leaking window. The application of the product was super simple and went on clean. It sealed the area and still holding. I would recommend doing Any and All caulking be done same day as opening as it doesn’t store well (hardened at the top of the applicator and in trying to remove, the top thing snapped). But I definitely will be buying again!
T**S
Best Option out there
This was the easiest caulk that I have ever used. You do not need a caulking gun. They have a QR code that leads you to a how to use video that makes it even easier. I am hoping it lasts a long time, but so far it lived up to the hype for me. Highly recommend. Great quality.
J**S
easier than a caulking gun
While I could not get the smooth line that the commercials show, I was quite happy with how easy and fast it was to use. Probably worth a five star if one has used it before, its definitely easier than a caulking gun.
L**L
Works well
Work well, definitely follow directions, but when you start be careful as it comes out fast
C**S
Caulking made easy
I hate caulking, but this stuff makes it less of daunting task. It comes out fast and smooth. Highly recommend.
M**D
Needed assistance to figure out how to open correctly.
Works well.
Trustpilot
3 days ago
3 weeks ago