J-B Weld Ultimate Black High Temp Silicone Gasket Maker 3oz - JB Weld

The J-B Weld Ultimate Black High Temp Silicone Gasket Maker (3 oz) is a professional-grade RTV compound engineered for the extreme demands of modern automotive and industrial applications. This advanced formula delivers a robust, flexible, and oil-resistant seal, providing reliable performance for professional technicians. When you need a dependable seal for high-heat environments, the J-B Weld Ultimate Black delivers.

Key Features

• Exceptional High-Temperature Resistance: Designed to withstand continuous temperatures up to 500°F (260°C) and intermittent spikes up to 600°F (315°C), making it suitable for turbo-adjacent, exhaust, and various under-hood components.
• Superior Fluid Compatibility: Maintains critical seal integrity by resisting degradation from engine oil, ATF, gear oil, power steering fluid, and coolant, ensuring longevity in diverse automotive and industrial systems.
• Sensor-Safe & Non-Corrosive: This low-odor RTV compound is safe for oxygen sensors, late-model electronics, and aluminum components, preventing damage to sensitive systems.
• Flexible, Durable Seal: Cures into a tough, rubber-like gasket that effectively dampens vibration, accommodates thermal cycling, and resists minor movement without cracking or shrinking, ensuring a long-lasting, reliable seal.
• Form-In-Place Versatility: Ideal for creating custom gaskets directly on irregular surfaces or replacing pre-cut gaskets, streamlining repair processes and reducing potential delays.

Applications

This gasket maker is commonly used by professional technicians on passenger cars, light trucks, and fleet vehicles for sealing critical components such as oil pans, valve covers, timing covers, and thermostat housings. Its robust formulation also provides dependable seals in industrial gearboxes, pumps, compressors, and HVAC housings exposed to heat and various oils. It bonds reliably to stamped steel, cast aluminum, and cast iron surfaces, providing a dependable, high-temperature RTV silicone gasket solution.

Specifications

• Manufacturer: JB Weld
• Model Number: 32329
• Color: Ultimate Black
• Volume: 3 oz tube
• Type: High-temperature RTV silicone gasket maker
• Weight: 0.25 lb
• Dimensions: 8.5 x 4.2 x 1.25 in