When we build King Of The Hammers, Supra Drag Race Competition, and Baja 1,000 Desert Racing transmissions, we use Permatex Ultra Gray Silicone.

Permatex Ultra Gray RTV Silicone is made in the USA for the professional mechanic. Designed for high torque and load applications, it exceeds import manufacturer's performance requirements with outstanding oil resistance. It is non-corrosive and can sustain a high temperature rating of 625-degrees F.

Tube contains 3.5 ounces / 99 grams. Made in Solon, Ohio.