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US Part Number: 27036
Canada Part Number:

Permatex® OPTIMUM GREY Gasket Maker

Specially formulated to withstand high vibration and high temperatures up to 700°F.

Permatex OPTIMUM GREY Gasket Maker is a premium choice for high temperature applications and rigid joints that experience high torque loads. Optimal for heavy-duty applications and extreme temperature conditions (-65°F – 700°F), and ideal for newer domestic and import vehicles. OPTIMUM GREY offers maximum vibration resistance and is 15% more flexible and has a 40% higher temperature rating than Permatex Ultra GREY. Extra nozzle included to avoid nozzle clogs and deliver maximum use. OPTIMUM GREY Gasket Maker is sensor safe, low odor, and non-corrosive. Offering maximum vibration resistance, OPTIMUM GREY is the most advanced, high temp, maximum torque RTV silicone gasket maker available.

OPTIMUM GREY Suggested Applications:

  • High Temp: Assemblies where high temperature & high vibration exist.
  • For high performance & premium components.

Valve covers, oil pans, automatic transmission pans, intake manifold end seals, timing covers, water pumps, and thermostat housings. Exhaust manifold/headers, and slip-fit exhaust parts.

US Item #CDN Item #Container SizeCase
27036N/A3.35 oz tube, 2 nozzles, carded12
US Item #Tech Doc File
27036TDS  SDS  

OPTIMUM GREY Instructions:

  1. For best results, surfaces should be clean and dry.
  2. Cut nozzle and apply a continuous 1/16” to 1/4” (2 to 6mm) bead of silicone to one surface, surrounding all bolt holes. Assemble parts immediately while silicone is still wet. Finger tighten until material begins to squeeze out around flange.
  3. Let dry for one hour then tighten to torque specifications.
  4. Allow 24 hours to fully cure before filling with fluids or returning to service.
  5. Replace cap after use.

NOTE: Not recommended for use on head gaskets or parts in contact with gasoline.

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Tech Documents

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