Permatex OPTIMUM BLACK® RTV silicone gasket maker combines maximum oil resistance with high flexibility. The trend is towards increasing use of dissimilar materials (plastic/steel, aluminum/steel, etc.), all which have different rates of expansion and contraction. In addition, with technology advancing, regulations and requirements tightening, designs include thinner metals, fewer fasteners, and wider spread bolt patterns.

The strength and flexibility of OPTIMUM BLACK® is designed to handle the changes and added stresses that exist between today’s lightweight, high performance, and premium component assemblies. It is sensor safe, low odor, and non-corrosive with resistance to oil, shop fluids, and vibration.

¢ Improved oil resistance
¢ Sensor safe, non-corrosive
¢ Good adhesion and flexibility
¢ Replaces most cut gaskets
¢ Can be used as a gasket maker or dressing
¢ Non-flammable, Non-toxic
¢ Low odor

¢ Oil pans
¢ Transmission pans
¢ Valve covers
¢ Valves and guides
¢ Timing gear covers
¢ Differential covers