Gasket Maker & Sealer JB Weld 9.5 oz Ultimate Blue RTV silicone

JB Weld Ultimate blue silicone gasket maker and silicone is an RTV (room temperature vulcanized) silicone designed for use in mechanical assemblies, sealing and bonding uneven surfaces. 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 blue color. Made in USA 100% Silicone Will not shrink or crack Great for timing gear covers, water pumps, differential covers, thermostat housings, oil pans, transmission pans