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JB Weld Ultimate Black RTV Gasket Maker Sealant — 9.5 Oz. Cartridge, Max Oil Resistance, 700°F Heat Rated, Model# JBW32929

Item# 7155064
JB Weld Ultimate Black RTV Gasket Maker Sealant — 9.5 Oz. Cartridge, Max Oil Resistance, 700°F Heat Rated, Model# JBW32929

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JB Weld Ultimate Black RTV Gasket Maker Sealant — 9.5 Oz. Cartridge, Max Oil Resistance, 700°F Heat Rated, Model# JBW32929

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$19.99

  • Shipping: 

    Factory shipped

  • Store Pickup: 

    Not available - online only
  • 700°F Intermittent Temperature Resistance: Ideal for extreme heat environments.
  • Maximum Oil & Petroleum Resistance: Formulated for sealing against engine fluids and lubricants.
  • Sensor Safe Formula: Safe for use around electronic components and sensors.
  • Low Odor Application: Comfortable to use in enclosed or ventilated workspaces.
  • Waterproof & Weather Resistant: Protects against moisture and environmental wear.

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Product Summary

J-B Weld Ultimate Black RTV Gasket Maker Sealant in a 9.5 oz (280 mL) cartridge is the premium solution for sealing automotive and mechanical components exposed to oil, petroleum, and extreme heat. Formulated for maximum resistance in the harshest environments, this low-odor, sensor-safe RTV silicone cures upon contact with air moisture to form a tough, flexible, waterproof seal. Ideal for use on metal surfaces, it withstands intermittent temperatures up to 700°F and won’t shrink, crack, or degrade under stress. Whether sealing oil pans, timing covers, or valve covers, this gasket maker delivers professional-grade performance for critical applications that demand lasting durability.

What's Included

    (1) One (1) 9.5 oz (280 mL) cartridge of J-B Weld Ultimate Black RTV Gasket Maker & Sealant, compatible with standard caulking guns for easy application.,

Features + Benefits

  • 700°F Intermittent Temperature Resistance: Ideal for extreme heat environments.
  • Maximum Oil & Petroleum Resistance: Formulated for sealing against engine fluids and lubricants.
  • Sensor Safe Formula: Safe for use around electronic components and sensors.
  • Low Odor Application: Comfortable to use in enclosed or ventilated workspaces.
  • Waterproof & Weather Resistant: Protects against moisture and environmental wear.
  • No Shrinking or Cracking: Maintains a durable seal under pressure and over time.
  • 1-Hour Set Time: Cures quickly for fast-paced automotive repair jobs.

Key Specs

AttributeSpecification

item#

7155064

Brand

JB Weld

Ship Weight

0.99 LB
AttributeSpecification

Product Weight

0.9900 lb

Dimensions L x W x H (in.)

1.75 x 1.75 x 7.9 in

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