Flex Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, Clear, 6.6 oz, 1-Pack

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.

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.

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.

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!

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).