🔧 Repair Like a Pro—Unleash Your Inner DIY Master!
The J-B Weld FiberWeld Automotive Repair Cast is a high-strength fiberglass wrap designed for quick and effective automotive repairs. Activated by water, it forms a permanent bond that hardens in just 15 minutes, withstands temperatures up to 400°F, and holds water pressure up to 100 PSI. Ideal for a variety of applications, this kit includes everything you need to tackle repairs with confidence.
Container Type | Tube |
Viscosity | High |
Water Resistance Level | Water Resistant |
Special Features | Hards like steel, Temperature resistant up to 400°F, Water pressure resistant up to 100 PSI |
Specific Uses For Product | Repair, Flooring, Masonry, Countertop, Furniture, Wood, Wall Repair, Glass, Table Top Coating |
Compatible Material | Fiberglass |
Item Package Quantity | 1 |
Color | Black |
Material Type | Fiberglass |
J**H
Works great!
Used on a backhoe muffler that mounts vertically under the hood. The top of the muffler where it joins a vertical 2" stub was fairly rusted out. Easily wrapped the damaged area and it hardened up VERY quickly. No more leak or loud noise. Saved me hundreds of dollars v.s. buying a hard to find muffler.They do have you wrap it with a "bandage" until it cures and they tell you to take it off in a few minutes. They are serious on " a few minutes". It gets locked in quickly; don't delay.Good, effective product.
S**H
Amazing
Totally works as it should and get your exhaust completely quiet as long as you use it as you're supposed to
D**N
Works not bad
Works as described
M**L
Great product
I've used this before and it's by far the best out of all the other similar products. If you follow the instructions, it last for a long time. They just have to remember to prep the surface correctly. And it will last. I had to repair my exhaust because someone stole my catalytic converter a year ago. And the repair lasted a year. ⭐⭐⭐⭐⭐
B**N
Doesnt last
Bought this to cover a small hole in exhaust. Worked great and very easy to apply but only lasted for about 4 days before it blew through the tape. used on a 99 wrangler
R**S
Works great.
Works great. Use it on 2" aluminum irrigation pipe.
L**E
Did not work. Seemed like it was going to but failed as soon as the exhaust heated up.
I had high hopes with this product. It was fairly easy to follow the instructions, and the included gloves were nice for handling the sticky material once wet. It wrapped around our broken exhaust and hardened nicely, just like a cast would for a broken arm. I was so proud of my work. It solidified nicely. But on the maiden voyage post-repair (after waiting the required cure time), my sister in law could smell something burning/melting, and the exhaust snapped cleanly through the cast repair. Very disappointing.
P**K
It's a mess to use but does what it says it will do, JB Weld delivers again
Throw away the included gloves and go buy a box of nice ones, trust me, the extra $$$ is worth it to save your hands because that resin is no joke. If you do get it on your hands I've found nothing will actually remove it, not alcohol, goo gone, debonder, dish soap, simple green...your best option is to just rub dirt on your hands to make them not stick to stuff until it cures then keep rubbing dirt on it until it fades and enjoy having permanently dirty looking hands for a week or so until that layer of skin wears down.Once it activates you have about 30 mins before its locked in place. I used it prior to having any leaks actually so I can't tell you if it stops them but my situation was this; since I don't have access to a welder and wanted to install an exhaust system, I used a wrap of this under each of the clamp bands for additional sealing of the joints. So far I've had no noise, no fumes, and no rattle so it seems to be doing a good job.
Trustpilot
3 weeks ago
3 weeks ago