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🔧 Seal Smart, Live Bold: The Last Caulk You'll Ever Need!
Flex Caulk is a high-performance, waterproof hybrid polymer sealant designed for indoor and outdoor use. Its easy-to-use adjustable nozzle eliminates the need for a caulk gun, delivering precise application every time. This clear, paintable formula adheres to a wide range of surfaces—even wet ones—while resisting UV damage, chemicals, shrinking, cracking, and brittleness. Ideal for everything from bathrooms and windows to RVs and marine applications, it cures fully in 24 hours, providing a durable, weatherproof seal that professionals and DIYers trust.
| ASIN | B0D2DWL9T2 |
| Best Sellers Rank | #149 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Adhesive Caulk |
| Brand | Flex Seal |
| Brand Name | Flex Seal |
| Color | Clear |
| Customer Reviews | 4.2 out of 5 stars 345 Reviews |
| Full Cure Time | 24 hours |
| Included Components | Flex Caulk, Clear, 6.6 oz, 2-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 | 13.2 fluid ounces |
| Manufacturer | Swift Response, LLC |
| Material Type | Polymer |
| Number of Items | 1 |
| Number of Packs | 2 |
| Part Number | CFSCLRR675-2PK |
| Surface Recommendation | Tile, Pipe, Counter Top, Window, Door, Sink, Tub, Walls, Gutter |
| Tensile Strength | 400 psi |
| UPC | 810129871104 |
| Unit Count | 13.2 Fluid Ounces |
| Water Resistance Level | Waterproof |
M**J
Great Product
This product is a fantastic find! It's reasonably priced, making it accessible for most budgets without compromising on quality. The product is exactly as described, and its usefulness cannot be overstated. I've found it to be incredibly practical and efficient in meeting my needs. The attention to detail is impressive, and the performance is on par with more expensive alternatives. If you're looking for something reliable, well-made, and at a fair price point, this is the perfect choice. Highly recommended!
T**S
Well worth it!
Caulking isn't new to anyone, but for the homeowner or renter who occasionally needs a bit of caulk and wants it ready to use at a moment’s notice, this is the product to reach for. Unlike traditional tubes that require squeezing and can be messy or inconsistent, this applicator features a push-button mechanism with adjustable flow control—making precise application effortless and clean. The design is intuitive and ideal for small touch-ups or quick fixes around the house. While it may come at a slightly higher price point, the convenience, reliability, and ease of use make it a worthwhile investment for anyone who values having the right tool on hand when needed.
K**.
Not totally clear
Does the job but it dries kinda yellow, not clear. But should be ok once it’s painted.
R**M
Sealant
Love these it seals really good
J**N
Worth the buy
Extreme durability
J**Y
Doesn’t seal for long, overpriced.
Writing this review after having this product applied for a few months. Does NOT hold up. Product had degraded and is no longer sealing. It is visibly compromised and has started degrading. This is NOT a superior product when used outdoors. I have seen cheap window caulk seal way better for way longer.
M**G
Still leaking…
I’ve used this twice and my bathtub is still leaking…. It was easy to install but I’m going to be removing and going back to old school bathroom tub and tile caulk.
N**H
Great
So easy to use comes out clear and seals great . Had a hard time getting if off my fingers and hands but I did with out it sticking everything together. Will buy more.
Trustpilot
2 days ago
2 weeks ago