3M Marine Grade Silicone Sealant White

This stuff worked perfect. I had a pin hole in my pool and as the water was spraying out I put this on my finger pressed it over the hole and it stoooed🤩 It holds up phenomenally!

This product, works completely as advertised. Nothing adheres any better, above or below the Waterline.My only complaint (why I gave value for money only 4 stars) is that they don't make it in any smaller quantities. Often times, you just don't need 3 fl ozs. And once you open the tube, and the air hits the end, you can't put the genie back in the bottle. It's all going to harden, used on the project, or left in the tube :-(

This is some serious sealant. But the bottom end popped on me so be careful.

Great product. Used as a sealer on my rv.

Needed some marine grade silicone for some fittings on my camper and this worked perfectly. Put the cap on after you're done and the product doesn't cure in the tube and become a solid mess like some other products. The only thing which doesn't work well is the threaded screw-on dispenser cap. The thread will strip with too much lateral pressure, which always happens to me. Also, do yourself a favor and purchase one of those metal tube keys that help you squish material out of a metal tube. It will save your fingers from exessive squishing, lol.