The Piston moves inside the cylinder wall or the liner, reciprocating up and down. The liner supports and guides the piston, forming a main part of the air compressor chamber. The piston may or may not have rings for sealing depending on type and purpose. The piston obtains its reciprocating motion from the connecting rod which connects the piston to the crankshaft. These piston pressure and wearing are manufactured by using the latest techniques and the best raw material that provide them with long-lasting performance.