??Special needs of the rubber seals?

??The role of rubber seals are sealed to prevent leakage and prevent the oil into the combustion chamber. Since the piston in a poor working environment a high-speed, high pressure and high temperature, so the need of the rubber piston seals deal with special needs. The rubber piston seal their surface treatment is also a difference, wherein the first outer peripheral surface of the rubber seal usually chrome or molybdenum spray process, mainly in order to improve the lubrication and improve wear resistance rubber seal. Rubber seals Metropolitan tinned or phosphate processing, mainly to improve wear resistance.

??Rubber seals are generally made of cast iron, a certain flexibility, a variety of cross-sectional shape, surface coating to increase the run-in performance. When the engine is running pistons thermal expansion, so the rubber seal with an opening gap, in order to maintain the sealing when installed, to the position of each opening gap rubber seals staggered. A piston tend to have three to four rubber seals them in different roles, divided into oil and gas ring ring two categories.

??The piston is one of the main parts of an automobile engine, the engine start time accounted for a very important position. Like automobile engine is the "heart", and the piston can be understood as the engine of the "center", it piston ring (rubber seals), piston pins and other parts of the piston group.