3M Marine Grade Silicone Sealant, 08019, For Boats and RVs, Above the Waterline Interior/Exterior Sealing, Clear, 3 fl oz Tube

Good Stuff, easy to work with.

I love this stuff. I wouldn’t use anything but it. It’s great quality. The smell isn’t strong. It’s not messy. And is great for sealing up lights and stuff to the hull.

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.

If it does everything it claims it’s a great product. But….its hard to work with. It starts getting hard after about 5 minutes of opening it. Cut your hole large to help with the squeezing.

Most excellent product!

Always good stuff for boat

I used the adhesive to seal a clear plastic tubing to a concrete fountain, supporting water flow through the tube and not letting water leak between the tubing and concrete. At 2 months there is no leak

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 :-(