J-B Weld Ultimate Black Gasket Maker & Sealant is an RTV (Room Temperature Vulcanized) Silicone gasketing material designed for use in mechanical assemblies where maximum petroleum and oil resistance is required. Upon curing| which occurs when the product is exposed to the moisture in air| the silicone forms a tough| waterproof| gasket and seal on most surfaces. It will not shrink or crack| resists oil and petroleum products| resists weathering| is sensor safe| has good temperature resistance up to 500 F intermittent and is great for many automotive applications.

GREAT FOR

• Oil Pans
• Valve Covers
• Transmission Pans
• Timing Gear Covers

USE ON

• Automotive
• Metal
• Rubber
• And More