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

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.

Very strong and holds amazingly

Used it to seal a hole in a silencer box about the size of a penny. Not ideal as it was on the lower face of the box. Held in place with tape after application whilst curing. Winter application so curing took more than 24 hours. The seal held but the repair ballooned. Still in place but not an invisible repair. Useful as an interim repair.

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.

Not great. Wanted to fill some pits in Aluminium. Mixed and applied liberally came back over 24 hours later to sand. It sanded very badly, it was coarse even though I was using 1000grit Wet and Dry. Anyhow got it somewhere near. Went to wash the part and all the JB Weld just washed away! Just disolved to grit in the sink. Useless.

Used to fix pretty big hole in exhaust for Mot. Pros: easy to apply with an old ice cream stick. Can be applied by hand and washes out easily. Cons: took several layers of application to plug the hole. First application had cracks through it after driving letting exhaust out so reapplied and reapplied and reapplied until it was totally covered. Also as I was applying this upwards, it does flow whilst drying so I had some minor jbweld stalactites. Had to keep smoothening it until it hardened. Overall, key is to apply in layers for large holes. So far seems to be holding, although we haven't driven much. Gut feeling is on long drives it will crack but good enough to get through mot. See pic for the size of hole I plugged. Would recommend as a temporary fix until you can get something more permanent.

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!

Very pleased with item and delivery

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.

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.

This glued me and my wifes marriage back together