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💧 Seal smart, live leak-free — the last caulk you'll ever need!
Flex Caulk is a clear, hybrid polymer sealant designed for indoor and outdoor use. It offers waterproof, weatherproof protection with a strong 400 psi tensile strength, adheres to virtually any surface (wet or dry), and cures fully in 4 hours. Its adjustable trigger flow nozzle requires no caulk gun, making application effortless and precise. Resistant to UV and chemicals, it won’t shrink or crack, and is fully paintable for a flawless finish. Ideal for everything from baths and windows to RVs and marine use.
| ASIN | B0DK9X348H |
| Best Sellers Rank | #139 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Adhesive Caulk |
| Brand | Flex Seal |
| Brand Name | Flex Seal |
| Color | Clear |
| Customer Reviews | 4.4 out of 5 stars 78 Reviews |
| Full Cure Time | 4 hours |
| Included Components | Flex Caulk, Clear, 3 oz, 1-Pack |
| Item Form | Liquid |
| 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 |
B**Y
Worth It
Husband loved how easy it was to apply. Seems to be working great too.
T**L
Easy to Use and works as described
I’d been trying to fix a leak in my birdbath and was fed up with the mess that the regular waterproof silicone made. It’s 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**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.
A**N
Exactly what I needed
Late review for honest review - This stuff is great! Already fixed a few horse tubs, bird bath and shows zero leakage, excellent purchase. It’s clear as it dries. Durable and saved a lot of things from the trash!
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**S
Just Works
Exactly as expected, excellent product
P**I
Good
Good
S**A
Easy to use
Worked well to seal air leaks in my 4 seasons room. Super easy to use and not very messy. I already bought another tube. The cap comes on and off easily. Way better then traditional caulk
Trustpilot
1 month ago
3 days ago