Nashua3 in x 15 ft Aqua-Seal Waterproof Tape in Black

Sticks to most everything, but because of that a bit difficult to work with

By far the best tape with the strongest holding power found anywhere. Just incredible!I have used it to cover a worn out door seal. Tape conduit to side of my water softener.Need a scissor to cut as it does not tear like duct tape. Seals and will not let go!I can not be without this tape in my tool box!The only downside is once it sticks it isn't coming apart without a fight, so don't use it where you need to remove it.

Surface MUST be dry for proper adhesion and does NOT adhere to silicone caulk even if dry. Otherwise, adheres well so far and is definitely waterproof when applied properly. Produce is very thin and easy to work with. Caution when applying as it will adhere easily and is difficult to remove, a good sign that is will not leak.

Works great

Trash! This product started off strong held great but after about 8 months on my indoor pond it failed. I had several sections two to three inches long where the tape had failed and come loose. Would not recommend for anything. If you're trying to seriously waterproof anything I recommend just spending a little more money. For the sake that it cost me roughly $33 to reseal my indoor pond. Not to mention the damage that could have been caused had I not noticed the drop in the water levels and drain the pond before catastrophic failure.

Great tape multifunctional even in water wow. Works great. Thanks

This is sold for underwater use, and may work in many cases and for many uses. I used it in a 100 gallon fish tank, and it failed miserably. It stuck only for a day, and (probably coincidentally) all of my 9-inch goldfish (properly termed carp) died within two days. They were years old. No, I did not introduce ANY other substance, device, etc. to the tank at that time. I do have to admit that nowhere on the label, etc., did it say it was safe for use in a fish tank.

Just used to seal pond liner. Seems to be a great product.