Gaskets are two items in the car, each of which has a specific function. Firstly, gasket is called the item which is required for sealing or adjusting the position of detachable parts of elements and devices. Secondly, the gasket is an item of the cavity above the piston, in which all thermal processes of the operating cycles are performed. In this case, this piece is called cylinder head gasket. The gasket is required in order to seal the joint of the plane head with the cylinder block of the internal combustion engine. It consists of several layers and a frame made of perforated steel sheet.

Such a gasket is necessary in order to eliminate possible leakage of oil when it is fed into the engine. The materials used in manufacturing of gaskets, may be different - cork, fiber, carton, paronite and other materials containing asbestos. Apart from that, such a gasket can be coated with a layer of sealant in order to increase the encapsulation.