Cylinder Head Gaskets, Seals and Coopers Rings Specialists

Composite Cylinder Head Gaskets

Composite head gaskets from Atlas

Plain Steel Core Cylinder Head Gaskets
As the name suggests these consist of aramid fibre facings bonded to a tinplated or zinc coated steel core. The adhesive used is resistant to oils, fuels & coolants. The strength of the material makes an ideal medium for sealing engines with narrow bore bridges.

Perforated Steel Core Cylinder Head Gaskets
These are composites with a perforated and tanged steel core with aramid fibre facings and provide a mechanical bond between the facings and core for improved durability. 

An adhesive can also be used to bond the facings and prevent coolant leakage along the core line. This construction is used for medium to heavy duty cylinder gaskets as well as for smaller engines.    

Backbone Cylinder Head Gaskets
These are similar to the steel core type with the exception of the facing material which is cut back from the cylinder bore area. An eyelet is then closed over the protruding core which itself can be embossed to improve sealing performance. A compression ring can also be included in the assembly. This type of  head gasket is used on diesel and racing engines.

We can provide a wide range of composite cylinder head gaskets to the highest specifications.

Please contact us to discuss what you need.

Surface Coatings on Composite Head Gaskets

A silicone coating is applied to the surfaces of composite cylinder head gaskets to enhance their performance in several important ways:

  • Creates a surface resistant to the penetration of fluids
  • Prevention of surface adhesion and to assist flange release
  • Provides a conformable surface layer
  • Provides a surface which provides a seal and resists wear caused by fretting
  • Provides a surface which will inhibit corrosion

Selective Area Coating

In some cylinder head gaskets it is necessary to reinforce local areas of the gasket body to equalise the load and to improve the sealing characteristics. This is accomplished by applying a silicone elastomer through a silk screen on to the surface.


Stockist of cylinder head gaskets for classic cars, tractors, marine & stationary engines