J-B Weld38237 FiberWeld 2 in. W x 36 in. L Automotive Repair Cast Kit, Black

I've used this before and it's by far the best out of all the other similar products. If you follow the instructions, it last for a long time. They just have to remember to prep the surface correctly. And it will last. I had to repair my exhaust because someone stole my catalytic converter a year ago. And the repair lasted a year. ⭐⭐⭐⭐⭐

Works great. Use it on 2" aluminum irrigation pipe.

This is my second purchase. Very easy to put it on once you have car on the ramps.

Used on a backhoe muffler that mounts vertically under the hood. The top of the muffler where it joins a vertical 2" stub was fairly rusted out. Easily wrapped the damaged area and it hardened up VERY quickly. No more leak or loud noise. Saved me hundreds of dollars v.s. buying a hard to find muffler.They do have you wrap it with a "bandage" until it cures and they tell you to take it off in a few minutes. They are serious on " a few minutes". It gets locked in quickly; don't delay.Good, effective product.

Calidad buena

Bought this to cover a small hole in exhaust. Worked great and very easy to apply but only lasted for about 4 days before it blew through the tape. used on a 99 wrangler

Throw away the included gloves and go buy a box of nice ones, trust me, the extra $$$ is worth it to save your hands because that resin is no joke. If you do get it on your hands I've found nothing will actually remove it, not alcohol, goo gone, debonder, dish soap, simple green...your best option is to just rub dirt on your hands to make them not stick to stuff until it cures then keep rubbing dirt on it until it fades and enjoy having permanently dirty looking hands for a week or so until that layer of skin wears down.Once it activates you have about 30 mins before its locked in place. I used it prior to having any leaks actually so I can't tell you if it stops them but my situation was this; since I don't have access to a welder and wanted to install an exhaust system, I used a wrap of this under each of the clamp bands for additional sealing of the joints. So far I've had no noise, no fumes, and no rattle so it seems to be doing a good job.

I had high hopes with this product. It was fairly easy to follow the instructions, and the included gloves were nice for handling the sticky material once wet. It wrapped around our broken exhaust and hardened nicely, just like a cast would for a broken arm. I was so proud of my work. It solidified nicely. But on the maiden voyage post-repair (after waiting the required cure time), my sister in law could smell something burning/melting, and the exhaust snapped cleanly through the cast repair. Very disappointing.