The O-shaped sealing ring is a circularly-shaped annular rubber sealing ring. Due to its circular cross-section, it is called an O-shaped sealing ring. It is mainly used to prevent the leakage of liquid and gas media when mechanical components are in a static state. In some cases, the O-shaped sealing ring can also be used as a dynamic sealing element for reciprocating motion of shafts and low-speed rotational motion. Depending on different conditions, different materials can be selected to match it. It is a widely used type in hydraulic and pneumatic transmission systems.   When choosing an O-ring, it is generally advisable to select a larger cross-sectional one. Under the same gap conditions, the volume of the O-ring that is squeezed into the gap should be smaller...

National Energy Administration: The cumulative installed capacity of new energy storage projects that have been completed and put into operation across the country has reached 313.9 million kilowatts/6,687 million kilowatt-hours.