Piston rings are circular metallic rings that are installed around the outer circumference of a piston in an internal combustion engine. They are designed to withstand high temperatures, pressures, and mechanical stresses, as they operate within the engine. Piston pins, also known as wrist pins or piston rods, are cylindrical metal components that connect the piston to the connecting rod in an internal combustion engine. They transmit the reciprocating motion of the piston to the connecting rod, which ultimately converts it into rotary motion through the engine’s crankshaft.
