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🔧 Seal Smart, Live Leak-Free — The Ultimate Hybrid Caulk for Every Surface!
Flex Caulking is a versatile, waterproof hybrid polymer sealant designed for indoor and outdoor use. Its easy-to-use nozzle eliminates the need for a caulking gun, while its advanced formula ensures a durable, paintable, and flexible seal that resists shrinking, cracking, UV damage, and chemicals. Ideal for everything from sinks and windows to RVs and marine applications, it bonds to nearly any surface—wet or dry—and cures fully in 24 hours, making it the go-to solution for professionals and DIYers seeking reliable, long-lasting protection.
| ASIN | B0D2FKV95Q |
| Brand | Flex Seal |
| Brand Name | Flex Seal |
| Colour | clear |
| Country of Publication | USA |
| Customer Reviews | 4.4 out of 5 stars 1,822 Reviews |
| Full Cure Time | 24 Hours |
| Included Components | Flex Caulk, Clear, 6.5 oz, 1 Pack |
| Initial Hardening Time | 10 minutes Minutes |
| Item Form | Liquid |
| Item Weight | 6.6 Ounces |
| Liquid Volume | 6.6 Fluid Ounces |
| Manufacturer | Swift Response, LLC |
| Manufacturer Part Number | CFSCLRR675 |
| Material Type | Hybrid Polymer |
| Model | CFSCLRR675 |
| Number of Items | 1 |
| Size of liquid in ounces | 6.6 Fluid Ounces |
| Surface Recommendation | Tile, pipe, counter top, window, door, sink, tub, wall, gutter |
| UPC | 810129870787 |
| Water Resistance Level | Waterproof |
K**S
Better quality caulking, easy to apply
When replacing a failing under-counter mounted sink (the glue failed), I chose a drop in replacement sink (also reviewed on Amazon), so it won't Halen again (unless gravity fails!). This is the sealant I used you ensure the new sink would not leak around the rim. Other herbal kitchen/ bathroom soft white caulking makes nice edges, but often gives out, needing replaced. THIS stuff is tough, and with a generous ring sandwiched around the sink beneath the flange/ rim, this stuff will both seal and ensure the sink remains firm in place. Of course I added the sink recommended bracing beneath, to ensure the sink stayed in place while the Flex Caulk was drying. This stuff is easy to apply, and not watery like the generic cheap stuff in the hardware warehouse stores. Months after installation, this caulking is firm in place, wipe-able along the sink edges with a wet rag, and "semi-rigid" (flexible yes, but firm in place).
L**R
Easy to use and does what it says
Easy to use and works great.
E**E
Best choice you can make when trying to flex your caulk.
I'm all caulked up at home. Love it. Water resistant and durable. Not messy and easy to use. Best choice in caulking I could find. Will use with everything.
A**T
Works s recommended
Good on clear, fast drying , works as recommended
K**Y
Super helpful & easy to use
Can’t get enough of this. Caulking like a maniac as the spring ants appear from little crevices I didn’t know existed!
Trustpilot
1 month ago
2 weeks ago