Metal sealing rings are a type of axial self-energizing static seal structure with a new sealing form and better sealing effect. The cross-section is generally "W", "M", or more complex multi-bellows shapes. They are used for high-temperature, high-pressure gas face sealing and engine gas path sealing in high-temperature gas states to prevent gas leakage and form an effective seal.

Piston rings are mainly used in key positions of aero engines and gas turbines such as combustion chambers and turbines, offering good high-temperature resistance, wear resistance, and corrosion resistance.

------ Derivative: Diesel Engine Exhaust System Sealing Ring