---
product_id: 408862331
title: "J-B Weld MufflerSeal Muffler Cement Plastic Tube 12 oz., Model Number: 37912"
brand: "j-b weld"
price: "₨16309"
currency: LKR
in_stock: true
reviews_count: 5
category: "J B Weld"
url: https://www.desertcart.lk/products/408862331-j-b-weld-mufflerseal-muffler-cement-plastic-tube-12-oz
store_origin: LK
region: Sri Lanka
---

# Cures fully in 24 hours or faster with heat Resists up to 700°F Iron-reinforced paste for durable sealing J-B Weld MufflerSeal Muffler Cement Plastic Tube 12 oz., Model Number: 37912

**Brand:** j-b weld
**Price:** ₨16309
**Availability:** ✅ In Stock

## Summary

> 🔥 Seal the heat, skip the shop — your muffler’s new best friend!

## Quick Answers

- **What is this?** J-B Weld MufflerSeal Muffler Cement Plastic Tube 12 oz., Model Number: 37912 by j-b weld
- **How much does it cost?** ₨16309 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/408862331-j-b-weld-mufflerseal-muffler-cement-plastic-tube-12-oz)

## Best For

- j-b weld enthusiasts

## Why This Product

- Trusted j-b weld brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Iron-Clad Strength:** Reinforced with iron for a tough, reliable bond on mufflers and pipe joints.
- • **Heat-Defying Sealant:** Withstands extreme exhaust temperatures up to 700°F for lasting repairs.
- • **Dual-Cure Flexibility:** Choose natural 24-hour curing or speed up with heat for ultimate convenience.
- • **Save Big, Repair Smart:** Avoid costly replacements—seal leaks and cracks yourself with confidence.
- • **Professional-Grade Repair:** Trusted by pros to fix mufflers, exhausts, and pipe joints with precision.

## Overview

J-B Weld MufflerSeal is a 12 oz. iron-reinforced paste designed to seal mufflers, pipe joints, and exhaust systems. It resists temperatures up to 700°F and cures either naturally within 24 hours or faster with heat application, providing a durable, professional-grade repair solution that saves time and money.

## Description

MufflerSeal Muffler Cement Plastic Tube 12 oz.

Review: Efficace ! - 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
Review: Buen producto - Impresionante muy recomendable

## Features

- 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.
- Package Weight: 12.5 ounces

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B084T8BW18 |
| Best Sellers Rank | #123,377 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #92 in Contact Cements |
| Brand | J-B Weld |
| Brand Name | J-B Weld |
| Color | Dark Gray |
| Colour | Dark Gray |
| Compatible Material | Metal |
| Container Type | Tube |
| Customer Reviews | 4.3 out of 5 stars 1,136 Reviews |
| Full Cure Time | 24 Hours |
| Included Components | Muffler Cement |
| Item Form | Putty |
| Item Package Quantity | 1 |
| Item Type Name | Muffler Sealer |
| Item Weight | 12 Ounces |
| Item form | Putty |
| Item height | 5.5 inches |
| Manufacturer | J-B Weld |
| Material | Iron Reinforced Paste |
| Material Type | Iron Reinforced Paste |
| Model | 37912 |
| Other Special Features of the Product | Iron reinforced paste for high-temperature sealing |
| Special features | Iron reinforced paste for high-temperature sealing |
| Specific Uses For Product | Auto, Repair |
| Specific uses for product | Auto, Repair |
| UPC | 043425379122 |
| Unit Count | 12 Grams |
| Viscosity | High Viscosity Paste |
| Volume | 354.88 Milliliters |
| Water Resistance Level | Not Water Resistant |

## Product Details

- **Brand:** J-B Weld
- **Item form:** Putty
- **Material:** Iron Reinforced Paste
- **Special features:** Iron reinforced paste for high-temperature sealing
- **Specific uses for product:** Auto, Repair

## Images

![J-B Weld MufflerSeal Muffler Cement Plastic Tube 12 oz., Model Number: 37912 - Image 1](https://m.media-amazon.com/images/I/61+ZqoegkbL.jpg)
![J-B Weld MufflerSeal Muffler Cement Plastic Tube 12 oz., Model Number: 37912 - Image 2](https://m.media-amazon.com/images/I/61YGmR+28FL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Efficace !
*by L***N on 23 May 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

### ⭐⭐⭐⭐⭐ Buen producto
*by M***N on 16 January 2026*

Impresionante muy recomendable

### ⭐⭐⭐⭐⭐ Works great
*by N***. on 6 June 2025*

worked great, easy to apply, saved $600 on Mufflers (for now)

## Frequently Bought Together

- J-B Weld MufflerSeal Muffler Cement Plastic Tube 12 oz., Model Number: 37912
- J-B Weld ExhaustWeld 2" x 72" Repair Wrap, White
- J-B Weld 37901 ExtremeHeat High Temperature Resistant Metallic Paste - 3 oz

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-01-31*