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💪 Seal it once, seal it right—flexible, flawless, forever.
Flex Caulk is a 6.5 oz clear hybrid polymer sealant designed for professional-grade waterproofing and weather resistance. It offers easy, gun-free application with an adjustable nozzle, bonds to nearly any surface (wet or dry), and cures fully in 24 hours. Ideal for indoor and outdoor use on baths, windows, roofs, marine, and automotive surfaces, it resists UV, chemicals, shrinking, and cracking while remaining fully paintable.
| ASIN | B0D2FKV95Q |
| Amazon Bestseller | #384,040 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #273 in Adhesive Caulk #113,889 in Hardware (DIY, Tools & Garden) |
| Brand Name | Flex Seal |
| Color | clear |
| Customer Reviews | 4.4 4.4 out of 5 stars (4,566) |
| Full Cure Time | 24 Hours |
| Included Components | Flex Caulk, Clear, 6.5 Ounce, 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 |
| Material Type | Hybrid Polymer |
| Model | CFSCLRR675 |
| Number of Items | 1 |
| Part Number | CFSCLRR675 |
| Surface Recommendation | Tiles, pipes, countertops, windows, doors, sinks, tubs, walls, gutters |
| UPC | 810129870787 |
| Unit Count | 6.6 Count |
| Water Resistance Level | Waterproof |
G**S
Bought this product to seal a tub and tub walls. This was one of the easier applications I had to do, loved the built-in caulk gun with thickness selector. Made the job very simple, and the product dried relatively quickly. I would definitely buy this product again for other home projects.
T**S
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.
A**R
This little trigger tube works great.
C**6
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.
B**O
Very good product, easy to apply, but read the instructions first—the applicator takes some finesse to use. There is a strong vinegar type odor, but it cleans up easy with water and a paper towel!
Trustpilot
3 days ago
2 days ago