What is the specific function of a "retaining ring"

The specific functions of the retaining ring can be summarized as follows. Today, the manufacturer of the retaining ring will introduce it to you.

Prevent "gap bite" phenomenon of O-ring: The use of retaining rings can increase the working pressure of the O-ring, prevent "gap bite" phenomenon under high pressure, thereby ensuring its normal operation and extending its service life. When the pressure is high enough, the retaining ring and O-ring will deform simultaneously, but this deformation mainly occurs at their upper and lower corners, without causing the retaining ring to "squeeze out". This design allows for an increase in static sealing pressure to 200-700MPa and dynamic sealing pressure to 40MPa.

Sealing cylinder: In the engine, the retaining ring serves to seal the cylinder. When the piston rises, the retaining ring tightly adheres to the cylinder wall, forming a sealed space that effectively isolates the combustion chamber and upper gas distribution system, preventing gas leakage in the cylinder.

Prevent lubricating oil combustion: The presence of retaining rings can prevent lubricating oil from infiltrating the combustion chamber, prevent harmful substances from oil and gas combustion, protect the environment, and prevent damage to internal parts of the engine.

Reduce wear: The retaining ring can form a lubricating film, effectively reducing wear between the piston and cylinder wall, thereby extending the service life of the engine.

Improving engine efficiency: The sealing performance of the retaining ring allows the high-pressure gas in the cylinder to be fully compressed, increasing the pressure and temperature of the combustion chamber, thereby improving combustion efficiency and engine power output efficiency.

Axial limit: The retaining ring is mainly used to install in the shaft groove or hole groove of machines and equipment, playing a role in preventing the left and right movement of parts on the shaft or hole, that is, to achieve axial limit and prevent the axial movement of other parts.

Overall, retaining rings play a crucial role in mechanical and engine systems, not only improving the sealing and efficiency of the system, but also extending the service life of the equipment.