JB Weld 32929 Ultimate Black RTV Silicone Gasket Maker and Sealant - 9.5 oz

JB Weld Ultimate Black RTV Silicone Gasket Maker and Sealant is a professional-grade room temperature vulcanizing (RTV) silicone designed for mechanical assemblies requiring maximum petroleum and oil resistance. This sensor-safe formula cures when exposed to moisture in the air, forming a durable, waterproof gasket and seal on most surfaces.

Key Features:

• High-temperature resistance up to 500°F intermittent for demanding automotive applications
• Excellent oil and petroleum product resistance for long-lasting seals
• Will not shrink or crack after curing, ensuring reliable performance
• Weathering resistant for both interior and exterior use
• Sensor safe formulation compatible with oxygen sensors and other electronic components
• Sets in 1 hour with full cure in 24 hours
• Forms tough, flexible gaskets on metal, glass, and most plastics

Ideal for valve covers, oil pans, timing covers, water pumps, transmission pans, and other automotive sealing applications. The 9.5-ounce cartridge fits standard caulking guns for easy application.