Skip to content
BLUE COLLAR BUYS: Save Up to 50%. Shop Now >
Northern Tool Equipment Logo TextNorthern Tool Equipment Logo text link to Home.
Print

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

This is a carousel with one large zoomable image and a track of thumbnails on the left. Select any of the thumbnail buttons to change the zoomable image on the right. If a thumbnail is a video or 360 degree image thumbnail, or the last thumbnail in the list, the button will open the product media modal.

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

Click or Tap image to Zoom

$7.49

  • 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.

See full description

  • Description

  • Key Specs

  • Reviews

  • Q & A

  • Compare

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

Reviews

Questions & Answers

Questions

Recently Viewed Items

This is a carousel with auto-rotating slides. Activate any of the buttons to disable rotation. Use Next and Previous buttons to navigate, or jump to a slide with the slide dots.