Gasket Maker & Sealer JB Weld 3 oz Ultimate Black RTV silicone

JB Weld Ultimate Black gasket maker and 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 seal on most surfaces. Cures to a black color. Made in USA 100% Silicone Will not shrink or crack Great for oil pans, valve covers, Transmission pans, timing gear covers