Cometic Gaskets

Cometic offer a range of high quality, high performance gaskets. Performance Unlimited Engineering is an official a central stocking warehouse and distributor. Typically we are able to quickly supply to the UK and Europe. With regular shipments, none stock orders are usually filled within approximately 3 weeks. Special orders are available upon request and can be turned around in a little over a week.

There is a choice of catalogues: Powersports, Harley Davison, Hi-Performance (Snowmobile and ATV), and Domestic and Import Automotive.

MLS (Multi Layer Steel) High Performance Gasket

The MLS gasket is comprised of three layers of Stainless Steel. Cometic uses Stainless steel for added strength, it’s ability to rebound and corrosion resistance. The outer layers of the gasket are embossed and coated on both sides with a flouroelastomer rubber based material (Viton) designed to meet the demands of a variety of harsh sealing environments, load conditions and surface finishes. The Viton coating is heat resistant to 2500C or 4820F. The centre 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 both aluminium heads to cast iron blocks and aluminium heads to aluminium blocks.

Cometic Gasket Materials

The composition of MLS will also withstand the shearing forces created by aluminium heads on cast iron blocks. No re-torque is necessary. By design the MLS gasket promotes an even torque load across the sealing surface allowing for measurable reduced bore distortion.
Available thickness: 0.018” 0.027″ 0.030″ 0.036″ 0.040″ 0.045″ 0.051″ 0.056″ 0.060″ 0.066″ 0.070″ 0.075″ 0.080″ 0.084″ 0.086″ 0.089″ 0.092″ 0.098″ 0.120″ 0.140″

AFM (ALUMINUM FOAM MATERIAL)
Is the ideal gasket material for machined surfaces, especially when used between two uneven stamped surfaces that have been plated. AFM is a chemically blown, compounded nitrile synthetic rubber bonded to an aluminum core with temperature resistance of over 2500F. AFM material has an 85% recovery while maintaining strong torque retention. AFM does not require gasket sealers or silicone bead. Re-torque is not required.
Available thickness: .018″, .032″, .045″, .060″

CFM-20
A perforated steel core with an elastomer surface 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 thickness: .043″, .059″

ARAMID FIBER
Is a premium hi-temperature, hi-density creep resistant material that requires no retorquing and is fuel resistant. All Cometic fiber materials are asbestos free and require no additional sealants.
Available thickness: .012″, .015″, .020″, .031″, .039″, .047″, .060″, .094″, .125″, .188″

COPPER (DEAD SOFT)
Available thickness: .005″, .010″, .016″, .020″, .027″, .032″,
.043″, .050″, .063″, .080″, .094″

ARMOR CLAD

Ideal for exhaust gasket applications. Can withstand temperatures up to 20000F. Compressable to seal less than perfect sealing surfaces. Retains torque.
Available thickness: .042″, .064″

Contact us us with your gasket requirements and we will be happy to help. Please see below catalogues for engine availability and more technical specifications.

Custom gaskets are available in CFM and copper but you must supply a full technical drawing detailing all features.

Custom MLS is available but carries higher tooling costs that, for most applications, isn’t economically viable.