* Disclaimer: OveReview is reader-supported. We earn commissions from qualifying purchases
J-B Weld DS-114 PERM-O-Seal Radiator Stop Leak - 0.7 oz. J-B Weld DS-114 PERM-O-Seal Radiator Stop Leak - 0.7 oz. J-B Weld DS-114 PERM-O-Seal Radiator Stop Leak - 0.7 oz.

J-B Weld DS-114 PERM-O-Seal Radiator Stop Leak - 0.7 oz.

J-B Weld DS-114 PERM-O-Seal Radiator Stop Leak - 0.7 oz. J-B Weld DS-114 PERM-O-Seal Radiator Stop Leak - 0.7 oz. J-B Weld DS-114 PERM-O-Seal Radiator Stop Leak - 0.7 oz.
$ 9.77

Score By Feature

Based on 200 ratings
Easy to use
8.88
Mileage
6.26
Longevity
5.76

OveReview Final Score

How Our Score Is Calculated

Product Description

The JB WELD PERM O SEAL is a non-toxic compound ground to a very fine particle size to mix and flow quickly into the cooling system in order to detect and seal any leaks in it.
Our products have long been used by mechanics, repair pros, and avid DIYers because they bond strong to most surfaces in even the most demanding environments and since all our products are
THE POWERED CONCENTRATE IS AN ECONOMICAL WAY TO REPAIR AS PART OF A SYSTEM Compared to liquid-based alternatives, the powered concentrate uses the same technology, but at a lower cost.
This specially formulated compound is extremely durable and will seal leaks within a matter of seconds while acting as a rust inhibitor and lubricant. There is no chance of your cooling system becoming clogged or damaged.
Do it yourself With J-B, you can do it yourself no matter how big or small. BF Goodrich's heavy duty adhesives are a must-have. BF Goodrich's toughest adhesives are the world's toughest bonds. BF Goodrich delivers the world's strongest bond with its legendary performance.

Questions & Answers

What is the effect of using this on heater core leaks?

If that is the case, it would depend on the size of the The permanent seal may be able to resolve the leak if it is only a small leak A seal works the same way in a heater coil as it does in a It is necessary to estimate by looking at how much leak there is if you cannot see the opening. Perms are rather expensive, so if they are slow you might get one for a really reasonable price If you're considering sealing, give it a shot.

Can it be used to fix small leaks in plastic radiators?

It's hard to say. The minerals I mine are metals.

Do I need to use more than one of them? Why has my engine continued to smoke despite using 4 packs of a similar product?

I am the only one. It sounds like you have a large leak since you have used 4 others and you will need a complete coolant system flush and repair of leak to make it work again

I have a pin hole leak in copper pipe under the slab of my house. Is this product suitable for indoor plumbing?

My personal opinion is that it would not It is impossible to stop a leak in a radiator because the coolant-filled radiator has endless chances to stop the leak In a closed system, water is constantly recirculated. It may not be enough to let one flow by. I've had the same problem as you. Water in the pipe makes soldering the pin hole difficult. I recommend you clean the area around the hole with steel wool before trying again. In order to prevent water from flowing, I would force a small piece of copper wire into the hole flush with the hole. Once I had soldered the wire over, I would then fold it.

Selected User Reviews For J-B Weld DS-114 PERM-O-Seal Radiator Stop Leak - 0.7 oz.

The set up was too fast
3/5

I knew from reading reviews that it set up fast. So I made sure I had everything ready in advance. I mixed the packet before installing. As soon as I squeezed some on my putty knife to apply on top of mesh, the entire packet had already hardened. However, I squeezed more on the putty knife to apply on top of mesh after it had hardened. It took me less than 10 seconds, and I cut only one corner of the packet it wasn't like I opened up the whole packet and exposed it I could have done it a lot faster had I been allowed to actually apply it and use it, but who knows if it would have worked.

Trinity STOREY
Trinity STOREY
| Jul 23, 2021
There's no reason not to try it
5/5

It was giving me fits because of a leak. We tried regular jb weld and were able to slow down the problem but Thus, I gave the experiment a try with no expectation that it would succeed. I noticed my vehicle did not have a puddle under it after a couple of days in the system. However, I am not sure how long it will suffice, but at least the leak was stopped.

Remi Campbell
Remi Campbell
| Oct 28, 2020
I give it one star
3/5

Radiators get clogged up with this stuff.

Keenan CONNOR
Keenan CONNOR
| Nov 23, 2020
It would not be recommended
3/5

small leak, one that did not even reach the ground it was not able to fix that tiny leak, but caused an issue with clogging in the inner heat exchanger inside the dashboard.

Kobe Payne
Kobe Payne
| Jul 27, 2021
I have found a solution that In my case, I had a bad radiator leak and my friend told me to use two JB seals to plug it up
5/5

In the end, the leak was finally resolved after a few weeks.

Robert Hodge
Robert Hodge
| Apr 26, 2021
It worked perfectly as it should
5/5

The powder is fine and should be treated with caution -- You can easily get rid of odors by blowing them out with a breeze or air from a nearby shop fan!.

Natalie Bradford
Natalie Bradford
| May 27, 2021
I am very pleased with this product
5/5

The friend of mine recommended this to me because I had a small leak in my radiator. I was very pleased with this. It was easy to follow the directions and I've had no problems The technique probably saved me at least hundreds It would be nice if you could recommend some of their products to everyone.

Rayna Webster
Rayna Webster
| Sep 22, 2020
I didn't expect this to be so good! It was very easy to apply, and the pinhole leak was immediately fixed
5/5

I used half a tube in my motorcycle radiator, and this worked almost instantly.

Khaleesi Oneill
Khaleesi Oneill
| Apr 08, 2021

Related Products For J-B Weld DS-114 PERM-O-Seal Radiator Stop Leak - 0.7 oz.