product image
product image preview
product image preview
product image preview
product image preview
product image preview

J-B Weld MufflerSeal Muffler Cement Plastic Tube 6 oz. (37906)

6.99

Save 13%

Other platform prices

J-B Weld MufflerSeal Muffler Cement Plastic Tube 6 oz. (37906)

4.3

400+ bought in past month

Highest ranking 101

13 comments

$6.99

Save 13%

Other platform prices

· J-B Weld Muffler Seal: MufflerSeal is an iron reinforced paste designed to seal mufflers, pipe joints and exhaust systems. MufflerSeal can resists up to 700 F. · Cure Process: MufflerSeal can cure in two ways: By allowing the product to fully harden after it has been applied which can take up to 24 hours (time may vary based on cold or humid work environments) or MufflerSeal can be cured through heat application. You will be able to tell when the product is cured once it is hard. · Projects: Mufflers, Pipe Joints and Exhaust Systems.

Related products

Reviews From
avatar

SamReviewed in the United States on May 17, 2025

AMAZING, I couldn't weld the top of a muffler, that worked like weld, thanks

avatar

Cameraguy6781Reviewed in the United States on April 14, 2025

Works very well. A bit messy, so you’ll need to wear adequate protective gloves and if you heat up your exhaust pipe or muffler, you will need to work fast. I couldn’t clean off the rust as recommended, but it worked anyhow. This was well worth the money, and is a brand I trust!

avatar

dwkestellReviewed in the United States on March 17, 2025

Works as intended. Messy to work with but has help now for 4 months.

avatar

Jeff GoudieReviewed in the United States on March 30, 2025

This was received by the promised delivery date and I think it has done very well. It was used to fix an exhaust leak near an oxygen sensor and has worked fine.

avatar

Firecapt45Reviewed in the United States on March 23, 2025

Excellent product!! Used this on a hole in my muffler, and it sealed it perfectly. I did have to cover it twice to ensure a strong hold, but it worked as described. 2 thumbs up on this product!!

avatar

WesleyReviewed in the United States on February 25, 2025

Lasted approximately one month then patched area blew out.

avatar

JospehMonbbJuniorReviewed in the United States on April 20, 2025

Large quantity

avatar

Chris WReviewed in the United States on May 1, 2025

It works for a couple weeks and then it disintegrates.

avatar

Yosef A.Reviewed in Mexico on December 17, 2024

Dura muy poco, se agrietado y se cae rápido

avatar

DamienReviewed in Australia on February 25, 2025

I’ve used it before and it is a quality product I recommend my self !

avatar

PlumeReviewed in France on July 7, 2024

Très bon produit qui a rebouché mon pot d’échappement troué, top je suis désormais conforme au CT

avatar

Louis DugrainReviewed in France on May 23, 2024

Alors oui ca coute un bras mais c'est vraiment efficace pour le coup. Utilisé pour colmater un trou dans mon silencieux intermédiaire sur une Golf, juste frotté un peu avec une brosse sur la visseuse et soudé une plaque vite fait avec un mig et j'ai tout rebouché au JB Weld. Il faut juste attendre un peu que ca prenne et laisser chauffer pour que ca se solidifie. on peut aider avec un décapeur thermique mais si le temps est sec on peut juste le laisser quelques heures voire la nuit et le lendemain ca aura pris et ce sera étanche, j'ai économisé 400 balles

avatar

Amazon CustomerReviewed in Canada on March 13, 2025

I used it to seal the exhaust on my diesel heater. It did the job.