Piston Rings

Engine Piston Rings

 

You will find piston rings at the top end of the circumferential grooves of the piston’s outer periphery. Basically, these are circular rings and made of very special alloy steels. Though, these rings are made of steel, they can retain elastic property at high temperature and pressure. If you give a close look to it, you will find two rings mounted for the piston of your vehicle’s engine. Basically, the upper ring is used to make air tight seal to prevent leakage of the flue gases (burnt gases) into the lower portion. However, the lower ring prevents oil leakage into the cylinder.