Head Gasket,Head Gasket Manufacturer,Head Gasket Supplier
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Home > Standard Parts > Sealings > Head Gasket

Product Catalogue

Engine Cylinder Block,Cylinder Head Gasket,Main Bearing
All manufactures names, numbers, symbols and descriptions are used for reference purposes only and it does not imply that any part listed is the product of these manufacturer

Head Gasket (105)

A head gasket is a gasket that sits between the engine block and cylinder head(s) in an internal combustion engine.Its purpose is to seal the cylinders to ensure maximum compression and avoid leakage of coolant or engine oil into the cylinders; as such, it is the most critical sealing application in any engine, and, as part of the combustion chamber, it shares the same strength requirements as other combustion chamber components.

Types
MLS or Multiple Layers Steel – Most modern head engines are produced with MLS gaskets. These typically consist of three layers of steel. The contact faces are usually coated with a rubber-like coating such as Viton that adheres to the cylinder block and cylinder head while the thicker center layer is left bare.
Solid copper – a solid sheet of copper, and typically requires special machining called 'o-ringing' that places a piece of wire around the circumference of the cylinder to bite into the copper. When this is performed copper gaskets are extremely durable. Recently companies have started producing copper gaskets with integral sealing wires permitting their retrofit into engines without the removal of the engine block for machine work.
Composite – an older technology. Typically these are made from asbestos or graphite but are more prone to blowouts than newer gaskets. Asbestos gaskets are becoming increasingly rare due to health concerns.
Elastomeric – a gasket type used by Rover on their K Series engines. It utilised a steel core plate with molded in place silicon rubber beads to seal oil and coolant passages. The bores were sealed by rolled steel fire rings in a more conventional manner. The idea behind the gasket design was to produce a production version of the technology used in F1 engines at the time. The original application of the gasket on the smaller versions of the K Series was very successful. However, an engine redesign resulted in persistent problems with the design – the joint interface became unstable and the gasket could not cope.

A leaking head gasket can be classified as either external or internal. An external leak can be identified as oil and coolant accumulating underneath the engine. The presence of coolant can be detected by shining a black light on what appears to be an oil leak; the appearance of coolant will show up under the black light. External leaks can also appear as previously described in the oil. An internal leak can usually be diagnosed by excessive coolant accumulating in the expansion tank along with the presence of hydrocarbons in the form of foam.

World famous brand: FEDERAL MOGUL®, COMETIC GASKET®, DANA®, INTERFACE®, ELRINGKLINGER AG®, VICTOR REINZ®, VALQUA®.

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