





🔥 Seal the heat, own the street!
The 37901 ExtremeHeat Metallic Paste by J-B Weld is a high-viscosity, heat-resistant filler designed to withstand temperatures up to 538°C. Perfect for repairing exhaust systems, grills, and fireplaces, it sets in 1 hour and cures fully in 24 hours, delivering durable, professional-grade repairs in a compact 3 oz package.



| Manufacturer | JBWeld |
| Brand | J-B Weld |
| Model | ExtremeHeat High Temperature Resistant Metallic Paste - 3 oz |
| Product Dimensions | 4 x 4 x 5.2 cm; 86.18 g |
| Item model number | 37901 |
| Manufacturer part number | 37901UK |
| Special Features | Heat Resistant |
| Item Weight | 86.2 g |
| Viscosity | High |
M**C
Will survive very hot temperatures.
Used this product to repair a splash grill inside my oven. A bracket to hold the grill in place had broken off. I used this compound to re fit the bracket to the grill which has to deal with very high temperatures. Excellent results, the bracket is now fitted to the grill again and everything back to normal. Would purchase this product again.
B**.
Got my car through one last MOT
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!
E**D
Only tiny holes
Very good, but for very small holes as described
B**N
Good
Good product
A**I
Didn't work for my project
I needed to repair the back of my oven. The screws that held the fan cover in place had fallen out as the holes had rusted. This seemed the ideal thing to do the job but I am afraid it just didn't work for this particular project. It did harden up but just fell out when I tried to drill through it and hadn't really adhered to anything. I think this is probably best when used thickly, more as a gap filler than to create a workable surface.
A**6
Fixed exhaust.....eventually. Temporary fix.
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.
A**T
Exhaust gasket and rust repairs
Got my old banger through its MOT and I know it needs a whole new exhaust system!! Have tried other brands this is by far the best and can tell straight away. Make sure you wire brush, sand and clean the area you’re applying it to. I didn’t have a problem with it sticking. It is a small tub though, I needed to order another one to seal all the holes but at least I didn’t mix up more than I needed.
W**Q
Amazing!!
Fantastic product, will still be there when the car has disintegrated.
R**I
Amazing result. Used on an old gas oven door. Unable to get parts to repair handle but this product did the trick. Very pleased.
C**N
Super produit, A permis de réparer une fuite de boîte de vitesses.
J**A
I bought it to fill the gap developed in high pressure vessel..it is very good and handy in such situations..highly recommend.
T**S
Reparer un coude d’echapement sur un bateau le temps d’avoir la piece de rechange.
S**I
This glued me and my wifes marriage back together
Trustpilot
1 month ago
2 days ago