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๐ง Seal smart, live leak-free โ the last caulk youโll ever need!
Flex Caulk Hybrid Polymer Waterproof Sealant is a 3 oz clear, industrial-grade sealant designed for professional and DIY use. Featuring a no-gun-needed adjustable trigger flow nozzle, it delivers precise application on wet or dry surfaces. Its advanced hybrid polymer formula offers superior tensile strength (400 psi), resists UV and chemicals, and remains flexible without shrinking or cracking. The product is fully paintable and includes a Snap & Save cap to minimize waste, making it ideal for sealing bathrooms, kitchens, windows, and RVs with lasting waterproof protection.


| ASIN | B0DK9X348H |
| Best Sellers Rank | #143 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Adhesive Caulk |
| Brand | Flex Seal |
| Brand Name | Flex Seal |
| Color | Clear |
| Customer Reviews | 4.3 out of 5 stars 108 Reviews |
| Full Cure Time | 4 hours |
| Included Components | Flex Caulk, Clear, 3 oz, 1-Pack |
| Item Form | Liquid |
| Item Highlight | No caulk gun needed, trigger flow nozzle, paintable, won't shrink or crack, seals wet or dry, bath, kitchen, sink, window, RV |
| Liquid Volume | 3 fluid ounces |
| Manufacturer | Swift Response, LLC |
| Material Type | Hybrid Polymer |
| Model | CFSCLRR100 |
| Number of Items | 1 |
| Part Number | CFSCLRR100 |
| Surface Recommendation | Tile |
| Tensile Strength | 400 psi |
| UPC | 810129870770 |
| Unit Count | 3 Fluid Ounces |
| Water Resistance Level | Waterproof |
S**Z
So easy
This waterproof caulk is very easy to use, spreads a bead from a dial at the top of the tub. It has a surprisingly affordable price for just a 3 oz. Tube. The sealant comes out clear, is very flexible & stays clear/flexible after completely dry. Once you put a bead down, you use a wet finger to smooth it out, adhering all the way around. It takes 24 hours, preferably 48 hours to cure before it is considered completely waterproof. Can be successfully used to fill in gaps then smooth out the outer edges and let cure before getting wet.
L**G
This works
This worked and did what it needed to do and my apartment there was this hole by the bathtub where roaches would come and I put this on the hole and I have not seen roaches ever since so I'm glad that I bought this and plus buying this saves me from having to have the maintenance man come in I don't like to have maintenance come in when I don't have to
M**.
Cost is good
Easy to apply
M**Y
Application was easy.
Appears to be as advertised. Application on gutters was easy. I will have to wait until it rains to see how it holds.
C**S
It worked
It worked
M**Z
Not usable. Wouldn't come out of tube. Dried up.
Not functional, dried up.
T**L
Easy to Use and works as described
Iโd been trying to fix a leak in my birdbath and was fed up with the mess that the regular waterproof silicone made. Itโs so hard to push the middle of the tube up to dispense unless you have a caulking gun dispenser. This Flex Caulk is so easy to dispense and worked perfectly
M**E
Great sealant
I used this to seal where the landscape lighting birds went through the house siding from inside to outside from the control box.
Trustpilot
2 months ago
1 week ago