Maximum vibration resistance, with outstanding resistance to oils, cooling fluids, and shop fluids. 15% more flexible than Ultra grey.
Maximum temperature resistance: -65F to 700f(-54 DegreeC to 371 DegreeC) intermittent. 40% higher Temp. Than Ultra grey.
The most Advanced, high Temp RTV silicone gasket maker Available.
Description
Permatex Optimum Grey is designed for maximum torque load and vibration resistance; typically used in import vehicles with closer bolt hold spacing. Permatex Optimum Grey gasket maker is the premium option for coolants especially post DEX-COOL. Use Permatex Optimum grey on high vibration and high toque applications such as valve covers, water pump, intake manifold end seals, thermostat housings.
