Permatex Optimum Black Gasket Maker15% stronger and 60% more flexible than Ultra


In Stock


Optimum Black combines maximum oil resistance with high flexibility. Today, we see components changing and unlike materials meeting (plastic/steel, aluminum/steel, etc.) all with different rates of expansion and contraction. In addition, with technology advancing, regulations and requirements tightening, we see thinner metals, fewer fasteners, and wider spread bolt patterns. The strength and flexibility of Optimum Black 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. Also, an extra nozzle is included adding convenience, eliminating the hassle of a clogged nozzle, and allowing multiple uses of each tube without loss of product. Optimum Black is one of the most advanced, high flex, maximum oil resistant RTV silicone gasket makers available.

Product Features:

  • 15% stronger and 60% more flexible than Ultra Black
  • Retains highest flexibility with maximum oil resistance through use of a patented adhesion system
  • Resistant to auto and shop fluids, and vibration
  • Meets performance specs of OE silicone gaskets
  • Temperature Range: -65°F to 500°F (-54°C to 260°C)
  • Includes 2 nozzles for added convenience



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