J-B Weld 8297 HighHeat Temperature Resistant Epoxy Putty Stick, Machine Gray, 2oz

Seems to be a fantastic product! I bought this after my car developed quite a serious coolant leak from a metal pipe part of the engine. Wanted to use it as emergency fix really, however it turned out so good that it has become permanent fix until I have the will and time to take the car to the garage. I have filled the instructions to the letter and left it dry for 12 hours, just in case... I waited with this review for nearly two weeks to see the actual performance of the product... It hardened to a rock hard substrate and sealed the hole completely and reliably. Absolute bargain as well! I've put some before and after pictures. Can't recommend this enough!

Very easy to use, fixed hole in washing machine drum. Would definitely recommend

Had a small hole in our hall radiator. I was skeptical to tell the truth. Hallelujah, it actually worked. Sealed the hole, no problem. Over a year now since I did the repair. Still no leak. Once the putty sets, it goes rock hard. Handy stuff to have in the tool box. Highly recommended..

I found this very easy to use due ro easy instructions, as you only the amount required for use to be applied. Like the instructions say you have to knead the putty like working dough between your hands so that the outer darker area of is mixed with the inner lighter part of the putty to activate it before applyito to the surface area, but you must prepare the surface to with some sandpaper and clean it to make sure the putty has good surface to work with in the end. Once done it states it takes 8hrs for it to completely cure meaning you can even drill or sand it afterwards, if need be. I did find the i was able to shape it to plug the hole in pipe while while smearing it around the pipe, as to make sure it worked like a bandage to prevent tye potential of exhaust’s gas pressure being able to blow it anytime in the future. I wore rubber gloves while applying the putty with my hands which made it a lot easier to work seeing it can dry within 2hrs which means you can tell its just starting to thicken a little while still being mailable to continue shaping to surface area meantime. Remember, its up to 2hrs to drying but 8hrs to completely cure before being able to drill or sand it.

Surprisingly good!

Not good. I use it to fill up a hole on my car exhaust but doesn’t hold.

Good

Had to purchase this as during an inspection under my car I found the exhaust mounting bracket had broken away from the exhaust. So after making up a ball of this I applied it to the arm and exhaust, the adhesion was very good with no messiness. The bracket held to the exhaust and I left the vehicle to sit for a day and then took it for a long drive and checked the exhaust which was still held in place so this has good strength and durability. Hopefully this will last!