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JB Weld MufflerSeal Cement — 12 Oz., High-Temp Exhaust Leak Sealant, Metal-Reinforced, Model# JBW37912

Item# 7154803
JB Weld MufflerSeal Cement — 12 Oz., High-Temp Exhaust Leak Sealant, Metal-Reinforced, Model# JBW37912

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JB Weld MufflerSeal Cement — 12 Oz., High-Temp Exhaust Leak Sealant, Metal-Reinforced, Model# JBW37912

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$10.99

  • Shipping: 

    Factory shipped

  • Store Pickup: 

    Not available - online only
  • Heat Resistant to 850°F: Ideal for mufflers, exhaust pipes, and joints exposed to extreme heat
  • Metal-Infused Paste: Provides a strong, durable bond that resists vibration and pressure
  • Cures to Cement-Like Hardness: Long-lasting repair that won’t shrink or crack
  • Leak Prevention: Seals gaps and seams to prevent exhaust leaks
  • Extended Working Time: Sets in 2–4 hours, cures fully in 24 hours

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Product Summary

J-B Weld MufflerSeal™ Muffler Cement (12 oz) is a high-temperature, metal-reinforced paste formulated to seal and repair exhaust system components. Designed for automotive applications, this cement is ideal for sealing leaks at seams, gaps, and pipe connections in mufflers and exhaust systems. It sets in 2–4 hours and fully cures in 24 hours, forming a cement-like, heat-resistant bond that withstands temperatures up to 850°F. MufflerSeal™ is perfect for DIY or professional repairs, delivering long-lasting performance and a clean, dark grey finish.

What's Included

    (1) One (1) 12 oz plastic tube of J-B Weld MufflerSeal™ Muffler Cement

Features + Benefits

  • Heat Resistant to 850°F: Ideal for mufflers, exhaust pipes, and joints exposed to extreme heat
  • Metal-Infused Paste: Provides a strong, durable bond that resists vibration and pressure
  • Cures to Cement-Like Hardness: Long-lasting repair that won’t shrink or crack
  • Leak Prevention: Seals gaps and seams to prevent exhaust leaks
  • Extended Working Time: Sets in 2–4 hours, cures fully in 24 hours
  • Professional Grade Size: Larger 12 oz tube for multiple repairs or larger projects
  • Dark Grey Color: Blends with most exhaust and muffler components

Key Specs

AttributeSpecification

item#

7154803

Brand

JB Weld

Ship Weight

0.79 LB
AttributeSpecification

Product Weight

0.7900 lb

Dimensions L x W x H (in.)

6.7 x 1.0 x 1.0 in

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