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🔥 Fix the heat, beat the clock – your ultimate high-temp repair ally!
J-B Weld 37901 ExtremeHeat is a high-temperature resistant metallic paste designed to withstand up to 538°C (1000°F). Ideal for repairing cracks, holes, and gaps in exhaust manifolds, grills, fireplaces, and heat exchangers, it sets in 1 hour and fully cures in 24 hours. The paste can be drilled, machined, and sanded after curing, offering a durable, professional-grade finish trusted by thousands.
| ASIN | B01IBOBY74 |
| Best Sellers Rank | 4,707 in DIY & Tools ( See Top 100 in DIY & Tools ) 3 in Solder Pastes 2,437 in Home Care & Cleaning |
| Brand | J-B Weld |
| Customer Reviews | 4.1 4.1 out of 5 stars (11,500) |
| Date First Available | 12 July 2016 |
| Item Weight | 86.2 g |
| Item model number | 37901 |
| Manufacturer | JBWeld |
| Manufacturer part number | 37901UK |
| Model | ExtremeHeat High Temperature Resistant Metallic Paste - 3 oz |
| Product Dimensions | 4 x 4 x 5.2 cm; 86.18 g |
| Special Features | Heat Resistant |
| 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**N
Good
Good product
R**Y
Useful interim repair. Works with careful application.
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.
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.
P**S
far too weak
Claims it can be drilled, far too brittle and weak for that. How do they make such a claim?
J**N
Could be better.
Used on slight crack on exhaust manifold, followed instructions 100%. Lasted the first day took car out. And came off.....No good for use. Also remaining product in container no use , dried up so couldn't re do repair. Not fit for purpose.
M**W
Strong hold
Seems to work well, used on a broken bit on a woodburning stove flu where the cement had cracked and it seems to be holding together well. When I later came to redo the cement, I couldn't move it from the metal so it's got an incredibly strong hold
W**Q
Amazing!!
Fantastic product, will still be there when the car has disintegrated.
K**W
kanon
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.
Trustpilot
2 months ago
1 week ago