J-B Weld 37901 ExtremeHeat High Temperature Resistant Metallic Paste - 3 oz, Grey

This product works great .

This type of product is for people that have an old car that isn't worth pouring money into. My car almost got scrapped after its last MOT due to a catalytic converter exhaust leak, and cats are very expensive. Thankfully, this product did the trick and plugged the hole, allowing it to pass. Be careful though as it's fairly liquid and you'll need to be careful applying it. After it dried, I also covered it in a lot of gun gum to help it hold a bit better. Also note that this is by no means a permanent repair - the car will need a new catalytic converter at some point.... but not today. Excellent for a temporary quick fix... but your old car will get scrapped one day anyways!

Used to repair deep pits in iron stove for cosmetic reasons. Adheres well and rock hard but too granular to rub down to an invisible finish. There is always a raised edge you cant feather out. Took the paint over without issue. Easy to clean tools and hands, I Just used soapy water. Has a texture and paste thickness similar to valve grinding paste. For something that isn't a 2 part epoxy, it's seriously hard stuff. non-cosmetic repair on exhausts, blocks, rads etc I'd imagine it would be OK for a temp fix. It's so hard I would just have reservations to thermal cycle resistance over an extended time.

Used to fix a broken seam weld on a car exhaust. Worked brilliantly. However, not much product in the pot, so plan on getting enough. Copes well with high temperature applications.

The product has been very effective for repair work and has held good for many years. So much so that when the occasion arose to order more I had forgotten what the instructions were. This was unfortunate as the instructions on the packaging were obliterated by a label which extremely difficult to remove without destroying the instructions. Please beware that if you find yourself in the same situation the packaging will need a good soak and careful removal of the label.

Do not buy just opened it and it's rock hard separated

I used this to repair a hole in a gas BBQ that had rusted through, and also to reattach a support for the flame tamer. It was easy to use and has worked very well.

Great high-temperature repair paste! Easy to apply and sets firmly, creating a strong heat-resistant bond. Perfect for exhausts, engines, and other high-heat repairs. Once cured, it holds up really well—excellent value and reliability.

kanon

Amazing result. Used on an old gas oven door. Unable to get parts to repair handle but this product did the trick. Very pleased.

Je roule depuis plus de 2 ans avec un trou dans le bloc moteur de ma golf 2 colmaté avec JB WELD !

I bought it to fill the gap developed in high pressure vessel..it is very good and handy in such situations..highly recommend.

Reparer un coude d’echapement sur un bateau le temps d’avoir la piece de rechange.