Custom Gaskets

Need to change the bore size and/or thickness of a gasket? Or do you need a custom gasket design?

The process starts with a simple phone call. After Cometic’s in-house Technical Sales Team understands your needs, they work directly with our design engineers to ensure the gasket is drawn with state-of-the-art software and manufactured with the best materials, utilizing the most current and efficient manufacturing processes. If special tooling is required, we’ll provide a pre-production estimate for approval. Your gasket is then manufactured and shipped. The lead-time on bore and thickness changes is just three days and a complete gasket design takes just two weeks!

Cometic Street Pro Gasket

Available Materials

Multi Layer Steel (MLS)

The Cometic MLS gasket is comprised of three to five layers of stainless steel. Cometic uses stainless steel for increased strength, its ability to rebound and resist corrosion. The outer layers of the gasket are embossed and coated on both sides with a Viton rubber material designed to meet the demands of a variety of harsh sealing environments, load conditions and surface finishes. The Viton coating is heat resistant to 250°C or 482°F.

The center or shim layer of the gasket is comprised of an uncoated stainless steel layer, which can be varied to accommodate multiple thickness requirements. The MLS gasket is ideal for any kind of head and block combination. By design, the MLS gasket promotes an even torque load across the sealing surface allowing for measurable reduced bore distortion.


Available Thicknesses

  • .027"
  • .030"
  • .036"
  • .040"
  • .045"
  • .051"
  • .060"
  • .066"
  • .070"
  • .075"
  • .080"
  • .086"
  • .092"
  • .098"
  • .120"

Aluminum Foamette Material (AFM)

AFM is a chemically blown, compounded nitrile synthetic rubber bonded to an aluminum core with temperature resistance of over 250°F. AFM material has an 85 percent recovery while maintaining strong torque retention. AFM does not require gasket sealers or re-tightening.


Available Thicknesses

  • .018"
  • .032"
  • .060"

CFM-20

A stainless steel core with reinforced fiber facing is ideal for head gaskets, allowing heat to be drawn evenly across the gasket surface while providing maximum sealing characteristics when exposed to coolants and oils.


Available Thicknesses

  • .043"
  • .059"

Spring Steel

A stainless steel core with a .001" thick coating of viton rubber on both sides


Available Thicknesses

  • .008"
  • .010"
  • .012"

Aramid Fiber

A premium high temperature, high-density, creep-resistant material that requires no re-torquing and is fuel resistant. All Cometic fiber materials are asbestos free and require no additional sealants.


Available Thicknesses

  • .012"
  • .015"
  • .020"
  • .039"
  • .047"
  • .060"
  • .094"
  • .125"
  • .188"

Copper (Dead Soft)

Available Thicknesses

  • .005"
  • .010"
  • .016"
  • .020"
  • .027"
  • .032"
  • .043"
  • .050"
  • .063"
  • .080"
  • .094"

Armor Clad

Ideal for exhaust gasket applications. Can withstand temperatures up to 2000°F. Compressable to seal in less than perfect sealing surfaces.


Available Thicknesses

  • .042"
  • .064"

Aluminum

Solid material ideal for spacers and shims.


Available Thicknesses

  • .010"
  • .016"
  • .020"
  • .025"
  • .032"
  • .040"
  • .050"
  • .063"
  • .080"
  • .100"
  • .125"
  • .188"
  • .250"
  • .313"
  • .375"
  • .500"