J-B Weld 8277 WaterWeld Epoxy Putty Stick - 2 oz., Off White

Amazing, helped seal a crack in a very old pipe until I can have it replaced. Make sure you mix well and 'smooth' the edges down so there are no gaps for moisture to leak. Very easy to use, very affordable and so far is holding up very well. It is putty, so make sure your gloves are a little more fitted to make kneading easier.

This stuff works great, even in a wet environment! Allowed me to fix a leak in my ac drip pan and avoid a much more costly repair!

I got this because the P trap on my kitchen sink had a slow weep. I prepped the surface, kneeded the epoxy, smashed it into the joint and then wrapped the joint with self-fusing silicone tape. No leaky now!

It works great on a L shape elbow pvc joint in my sprinkler box (about 80psi).There is a very small leak in my sprinkler box, found last fall and confirmed this spring when turn back on the water (photo 2), there a few hair size water shoots out from it. I removed the component and brings to Home Depot, but they said the manufacture is no longer making it (or out of business), and they do not have any replacement in similar size.So for me, try some alternative solution is the only way to do before spend hundreds to hire professional. I decide to give this a try to this patty before really hire someone to do it, and thanks to many other reviews in this post, even a lot of people says it doesn't work with pressured pipe, I did see there are people successfully make it works.Based on all other people's experience, I did the following steps with extra caution:1. clean up all the dirt and debris, wipe out clean with paper towel.2. rough the surface a little bit with a wood sandpaper (barely add some scratch on the surface, to improve the bond between this patty and the pipe).3. discards the first1 inch of patty on the edge (some people recommend so), then take a about 1 inch of patty for first application. knead it to bar/snake shape and fold it, repeat for dozens of times.4. after it fully mixed and soft like peanut butter, make it like bar/snake, wrap it around the leaked position (like a ring over your finger), push it to the surface and smooth the edge (like a band aid aroundthe ring over your finger).5. wait 1 hour to 2 hour for first application to harden a bit (the first application only becomes slightly harden after an hour), then do the 2nd application same way to "patch" the 1st application (use 1st application to seal the leak, 2nd application to seal any potential leak of 1st application).6. wait 3 days instead of just 1 day to let it fully cured (assume there are moisture in the pipe and it take longer to dry)So far it works well after turning water back on and no more leanings.I will keep monitoring my pipe, in case if it leaked again, I will update here.note1: the product i received says its strength is 4370 psi (picture 1), which is much higher than the label in old picture and another product in home depot. I guess that extra strength may also helps if the product is fully cured.note 2: if your hole is larger, you may need more putty to add extra strength than how much i uses. but i still recommend multiple applications than use everything in one shot.----update: June 12patched another garden hose with 2 steps. it works for a week but leaks soon after a few usage, i guess flexible pipe may need more skill & patient.

I love JB Weld products, but this putty did not work on a pressurized pvc pipe with a tiny pin hole drip. I sanded, wire brushed, cleaned and dried, mixed putty wrapped it on pipe smoothed down edges and it started making bubbles under the putty. I knew it was not going to work then, i kept soothing it out trying to clog the pin hole, i let it sit for an hour checked and it is still dipping. Gotta get some pvc parts and get to work. IM sure it works for some applications, not with active dripI gave it an hour and checked back it was not leaking, two days later still not leaking. JB weld is good stuff.

Used this to fix a small leak, and so far it’s holding up great. I cut off a small piece with a tool, mixed it by hand (definitely wear gloves), then pressed it onto the area. I applied it around 10 PM and waited until the next morning before turning the water back on.The putty was easy to work with and hardened nicely overnight. Just make sure to knead it thoroughly until the color is uniform before applying. Overall, very handy to have around for quick emergency fixes.

Designed to work underwater or on things that are 'wet'. It is a putty, so it will stick in any position and not 'run' downhill before it cures.To use, you break off how much you think you need, and start kneading it between your fingers (wear rubber gloves). There is a center core that is a different color than the outside. When it turns a solid color (no streaks) it is completely mixed, and ready to apply. Sticks to CLEAN surfaces, even if they are wet, provided they are not under pressure. It can be put on the inside of a fish tank that is full, because the water will not try to push it away. I used it on a cracked water hydrant pipe. I mixed/applied the putty, and it seeped. I mixed more putty, and it seeped slower. I had the pipe cleaned up good, and was applying the putty maybe 1/4 of the way around the pipe, with the crack in the middle. I thought about it a while, and wondered if it wouldn't seal better if I just mixed up the rest of the package, and made a patch that went all the way around the pipe, extending about 1/2 inch or so past both ends of the crack. Finally, it was sealed, and has been holding fine since early spring.I gave it 3 stars because it didn't seal the first time, but I'm thinking it might have, if I went all the way around the pipe from the start. Since I don't know for sure either way, I give it an 'average' rating. It worked as intended, but not perfectly the first time (at least for me).