









💪 Seal Smart, Live Leak-Free — The Last Caulk You'll Ever Need!
Flex Caulk is a cutting-edge hybrid polymer sealant designed for professional-grade waterproofing and weatherproofing. Its easy-to-use, no-gun-required formula features an adjustable nozzle for precise application, cures fully in 4 hours, and offers superior adhesion to virtually any surface—wet or dry. Resistant to UV, chemicals, and cracking, this clear, paintable caulk is ideal for indoor and outdoor projects ranging from windows and doors to marine and automotive repairs.












| ASIN | B0DK9X348H |
| Best Sellers Rank | #180 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Adhesive Caulk |
| Brand | Flex Seal |
| Color | Clear |
| Date First Available | October 18, 2024 |
| Full Cure Time | 4 Hours |
| Item Form | Liquid |
| Item Weight | 5.9 ounces |
| Item model number | CFSCLRR100 |
| Liquid Volume | 3 Fluid Ounces |
| Manufacturer | Swift Response, LLC |
| Material | Hybrid Polymer |
| Number of Items | 1 |
| Product Dimensions | 8.75 x 2.24 x 2.24 inches |
| Surface Recommendation | Tile |
| Tensile Strength | 400 Pounds Per Square Inch |
| UPC | 810129870770 |
| Unit Count | 3.0 Fluid Ounces |
| Water Resistance Level | Waterproof |
C**6
Great product!!!
I got this product to help in my battle against my landlord special of an apartment and it DID NOT disappoint. From cracks around doors and windows that the light shined through to the seam under a sliding door and so much more, this product did the trick to seal up the drafty spots. It’s super easy to use and reuse. Unless you’re really looking for it you won’t even know it’s there and there’s no foul smell to it either. It sticks well to itself and to whatever you put it on. A little went a long way for me! 10/10 would (and probably will) get this product again.
L**R
Clear caulk
Easy and clean application of this clear caulk. No gun required is a plus. Used on a kitchen sink that was leaking due to a need for new caulking. Worked out great and sink no longer leaks! Great price and shipped fast. Purchased a separate tool to help with excess. Would purchase again.
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.
B**R
Flex calk
Is great product easy to use
S**H
No noticeable odors!! Easy to use
We purchased this to fill gaps around our home and it worked so well. I was worried about and odor since we needed to use it indoors and after using it in several places, there still was NO smell!! If you’ve ever had to use a silicone caulk then you know that’s huge. We had used the General Electric brand prior and it smelled SO strongly. We purchased the clear silicone and it truly was clear. No grey or cloudy color once dried. The squeeze handle made it much easier to use compared to having to use a caulk gun or your fingers to squeeze the tube. We would definitely purchase this again for other projects around our home!
T**.
Easy to use
Bought this to caulk around new faucet in the bathroom. It’s thick so you need to be careful. It’s durable, easy to use, and seems to be of good quality. There was no smell, dried pretty quick, and seems to have done a good job at keeping the water out.
K**N
Must work good. Just ok for me.
It’s ok but not as good as I thought it would be.
X**U
Excellent Waterproof Sealant – Highly Recommend!
Excellent Waterproof Sealant – Highly Recommend! I’m extremely impressed with Flex Caulk. This stuff really delivers on its promise of being waterproof and weatherproof. I used it to seal around windows and outdoor trim, and it went on smoothly with no mess. The adhesion is strong, and once it cured, it formed a durable, flexible seal that holds up perfectly against rain and temperature changes. What I like most is that it doesn’t crack or shrink like other caulks I’ve tried. It also looks clean and professional after drying. Whether you’re working indoors or outdoors, this product gets the job done right the first time. If you need a reliable caulk that truly lasts and protects against the elements, Flex Caulk is absolutely worth it. I will definitely be buying it again!
Trustpilot
3 days ago
1 month ago