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JB Weld Ultimate Black RTV Gasket Maker Sealant — 3oz. Tube, Oil and High Temp Resistant, 700°F Capacity, Model# JBW32329

Item# 7155048
JB Weld Ultimate Black RTV Gasket Maker Sealant — 3oz. Tube, Oil and High Temp Resistant, 700°F Capacity, Model# JBW32329

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JB Weld Ultimate Black RTV Gasket Maker Sealant — 3oz. Tube, Oil and High Temp Resistant, 700°F Capacity, Model# JBW32329

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$7.29

  • Shipping: 

    Factory shipped

  • Store Pickup: 

    Not available - online only
  • Maximum Oil & Petroleum Resistance: Engineered for harsh automotive environments.
  • High Heat Tolerance: Withstands intermittent temperatures up to 700°F.
  • Sensor Safe: Compatible with modern engine electronics and components.
  • Low Odor Formula: Clean and comfortable to use in any workspace.
  • Waterproof & Weather Resistant: Creates a reliable seal that won’t break down.

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Product Summary

J-B Weld Ultimate Black RTV Gasket Maker Sealant is a premium, high-performance silicone designed for applications requiring superior resistance to oil, petroleum, and extreme temperatures. Packaged in a convenient 3 oz tube, this low-odor RTV (Room Temperature Vulcanized) silicone cures on contact with moisture in the air, forming a strong, flexible, and waterproof gasket seal. With a high intermittent temperature resistance of up to 700°F, it’s ideal for high-stress automotive and mechanical assemblies involving metal surfaces and oil exposure. It won’t shrink, crack, or degrade over time and is sensor safe for use in modern vehicle systems. Whether sealing valve covers, oil pans, or timing covers, Ultimate Black delivers professional-grade performance with long-lasting durability.

What's Included

    (1) One (1) 3 oz tube of J-B Weld Ultimate Black RTV Gasket Maker & Sealant, carded for easy storage and handling.

Features + Benefits

  • Maximum Oil & Petroleum Resistance: Engineered for harsh automotive environments.
  • High Heat Tolerance: Withstands intermittent temperatures up to 700°F.
  • Sensor Safe: Compatible with modern engine electronics and components.
  • Low Odor Formula: Clean and comfortable to use in any workspace.
  • Waterproof & Weather Resistant: Creates a reliable seal that won’t break down.
  • No Shrinking or Cracking: Maintains integrity under stress and over time.
  • Fast Set Time: Sets in just 1 hour for efficient application and repair.

Key Specs

AttributeSpecification

item#

7155048

Brand

JB Weld

Ship Weight

0.24 LB
AttributeSpecification

Product Weight

0.2400 lb

Dimensions L x W x H (in.)

6.3 x 1.97 x 1.57 in

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