---
product_id: 579200634
title: "JB Weld Exhaust System Sealant, 85 g"
brand: "j-b weld"
price: "NT$795"
currency: TWD
in_stock: true
reviews_count: 10
category: "J B Weld"
url: https://www.desertcart.tw/products/579200634-jb-weld-exhaust-system-sealant-85-g
store_origin: TW
region: Taiwan
---

# Withstands up to 1800°F heat Sets fast in ~30 minutes Durable, shrink-free cure JB Weld Exhaust System Sealant, 85 g

**Brand:** j-b weld
**Price:** NT$795
**Availability:** ✅ In Stock

## Summary

> 🔥 Seal the deal, not your exhaust leaks!

## Quick Answers

- **What is this?** JB Weld Exhaust System Sealant, 85 g by j-b weld
- **How much does it cost?** NT$795 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/579200634-jb-weld-exhaust-system-sealant-85-g)

## 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

- • **Rapid Set Time:** Get back on the road fast with a quick 30-minute cure time
- • **Shrink-Free Seal:** Reliable, long-lasting seal that won’t crack or shrink over time
- • **Pro-Grade Durability:** Engineered for metal surfaces with water resistance to withstand harsh driving conditions
- • **Versatile Application:** Perfect for sealing gaps, smoothing seams, and fixing pipe connections in any exhaust system
- • **Extreme Heat Resistance:** Handles scorching exhaust temps up to 1800°F without breaking a sweat

## Overview

JB Weld Exhaust System Sealant is a professional-grade, heat-resistant paste designed to seal and repair exhaust system gaps and seams. It withstands extreme temperatures up to 1800°F, sets quickly in about 30 minutes, and cures without shrinking, ensuring a durable, water-resistant bond on metal surfaces.

## Description

JB Weld Exhaust System Sealant, 85 g

Review: Impressed - 400+ miles after using - no check engine light. We’ll see how long it lasts but definitely impressed so far.
Review: Does what is says - I needed to plug up a leak on my cast iron exhaust manifold. Appeared that the manifold was warped. Used this to raised the low side and then used a flat plate to grind it down. Seems to hold up well so far.

## Features

- It is a heat-resistant paste
- Used to seal gaps, smooth seams or seal pipe connections within an exhaust system
- Resistant to temperatures of up to 1800 degrees F
- Sets in approximately 30 minutes and will not shrink after cured

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08F2HJSTX |
| Batteries Included? | No |
| Batteries Required? | No |
| Brand | J-B Weld |
| Color | Multicolor |
| Customer Reviews | 3.9 3.9 out of 5 stars (42) |
| Date First Available | October 16, 2023 |
| Finish | Brushed |
| Included Components | 1 x JB Weld Exhaust System Sealant, 85 g |
| Item Form | Paste |
| Item Package Quantity | 1 |
| Item Weight | 3 ounces |
| Item dimensions L x W x H | 0.98 x 4.33 x 7.87 inches |
| Item model number | 37903 |
| Manufacturer | J-B WELD |
| Material | Metal |
| Number of Items | 1 |
| Part Number | 37903 |
| Pattern | Solid |
| Power Source | Hand_powered |
| Product Dimensions | 0.98 x 4.33 x 7.87 inches |
| Shape | Rectangular |
| Size | One Size |
| Special Features | Withstands heat up to 850ºF / 454ºC |
| Style | Compact |
| Surface Recommendation | Metal |
| UPC | 043425379030 |
| Unit Count | 3.0 Ounce |
| Water Resistance Level | Water Resistant |

## Product Details

- **Brand:** J-B Weld
- **Item Weight:** 85 Grams
- **Item dimensions L x W x H:** 0.98 x 4.33 x 7.87 inches
- **Material:** Metal
- **Style:** Compact

## Images

![JB Weld Exhaust System Sealant, 85 g - Image 1](https://m.media-amazon.com/images/I/71mryq8+u+L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Impressed
*by A***R on May 25, 2025*

400+ miles after using - no check engine light. We’ll see how long it lasts but definitely impressed so far.

### ⭐⭐⭐⭐⭐ Does what is says
*by R***D on September 13, 2024*

I needed to plug up a leak on my cast iron exhaust manifold. Appeared that the manifold was warped. Used this to raised the low side and then used a flat plate to grind it down. Seems to hold up well so far.

### ⭐⭐ Junk
*by J***M on July 2, 2025*

Didn’t hold muffler

## Frequently Bought Together

- JB Weld Exhaust System Sealant, 85 g
- 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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**Shop now:** [https://www.desertcart.tw/products/579200634-jb-weld-exhaust-system-sealant-85-g](https://www.desertcart.tw/products/579200634-jb-weld-exhaust-system-sealant-85-g)

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-01-27*