JFC070 Epoxy Putty

Was not sure when I bought it but as of today it is working at my house.

Excellent product and did the job needed

Terrible. I have a crack in a copper drain pipe (from the kitchen sink) that has been leaking enough to keep a bucket under. I was hopeful for this product. However, besides having a noxious odor (I became dizzy), it didn't harden well! It applied easily enough but after 21 hours it was still soft-ish and loosened at the edges of the application. The water was leaking around it and it fell off in one chunk when I touched it. The portion left filling the crack was still soft and moved easily. It should have been a clue when it arrived opened and the packaging held shut with cheap tape.

Easy to use even when fixture was wet. Sealed a pinhole leak on an older Oatey washer inlet hot water valve in no time at all.

Seller shipped it with a couple hours of ordering. As you can see from the photos I had a small leak in a baseboard radiator due to a poorly soldered joint. I applied this putty and it stopped the leak. Note: it’s important to follow directions carefully. I drained pipe and sanded joint with fine sandpaper before applying. I rolled the putty into a string bean like shape and then wrapped it around the leaky joint, worked it in with fingers, and then let it set before turning water back on. Saved me from having to hunt down a plumber and saved me a bunch of money too.

This review is for "just-for-copper" Epoxy Putty; made by Highside Chemicals Inc. I had a water leakage on one of the three cold water pipes feeding the master bath shower. The leak was at the center vertical T-connection, and about four inches of work area. I tried three different J-B Weld products. None worked. The Highside Chemicals Inc. (made in USA) did work the first time. Will use again for sure.

Used to repair an on demand water heater coil that had burst from freezing temperatures, ie it's a radiator just like in an automobile. Copper tubing, cleaned it up as directed, applied the epoxy after thoroughly mixing, reapplied after 4 hours as directed and waited 24 hours. Also realigned the edges of the break to minimize the gap, prior to the fix. Big proviso: wear gloves when mixing, as many have reported, it is an unpleasant smell that you wish to avoid contacting your hands. 4 stars because not sure about the longevity of the repair, but for now everything is good.

Stopped the leak under our bathroom sink on a copper pipe for a couple days then started leaking again but no where near the rate it was. Seems to be a good product. Maybe we need to apply it better.