Moving inside the sleeve, the pistons carry out reciprocating motion, exerting pressure directly on the working surface. Frequent changes in piston direction cause the oil film to break, causing boundary friction. Because of the influence of combustion products, the upper belt of the sleeve is subject to electrochemical corrosion. With insufficient thickness, due to the variable pressure, the cavities of the cylinder make radial vibrations. This accelerates the wear of both the sleeve and the walls of the corresponding block. Therefore, it is important to install a special gasket in a timely manner. It will protect the entire mechanism from destruction.

1. FL6
2. F6
3. B6
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The usage of O-ring set

Nowadays, MAHLE brand O-Ring Set, cylinder sleeve are subject to a wide range of requirements. Among them are high strength and high rigidity of the landing belts and walls, a high level of wear resistance, complete sealing of mates and joints, manufacturability and simplicity of design. The surface of the cylinder is treated from the inside, trying to achieve a snug fit of the individual components. This ensures a secure fit and avoids excessive wear due to increased friction. Cylinder O-rings are made of gray cast iron. It excellently holds an oil film, differs in corrosion resistance, wear resistance. Copper, vanadium, phosphorus, chromium, and molybdenum are often added to the cast iron alloy. This improves the stability of the material.