A piston ring is a metallic split ring that is attached to the outside of a piston in an internal combustion engine or steam engine. The main functions of piston rings in engines are: Sealing the combustion chamber so that there is minimal loss of gases to the crank case.
A piston ring is a metallic split ring that is attached to the outside of a piston in an internal combustion engine or steam engine. The main functions of piston rings in engines are: Sealing the combustion chamber so that there is minimal loss of gases to the crank case.
Source: Wikipedia "Piston ring" · CC BY-SA 4.0
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