O-rings are usually chosen with larger cross-sections as much as possible. In the case of the same gap, the volume of the O-ring squeezed into the gap should be less than the maximum allowable value.

O-rings are usually chosen with larger cross-sections as much as possible. In the case of the same gap, the volume of the O-ring squeezed into the gap should be less than the maximum allowable value.

O-ring is a circular rubber sealing ring with a circular cross-section, mainly used for mechanical parts to prevent leakage of liquid and gas media under static conditions. In some cases, O-rings can also serve as dynamic sealing elements for axial reciprocating motion and low-speed rotational motion. According to different conditions, different materials can be selected to adapt.

O-ring seals are the most commonly used sealing form in fluid power systems. They work well in many fluid dynamic systems, but caution must be exercised in their functionality. O-rings only function during deformation. The shape of an O-ring is like an O-ring, which is installed in a sealing groove and then compressed to ensure that there is no gap in the sealing groove, thereby sealing the flow of liquid or air. Although this simple sealing structure works well in fluid power systems, good sealing can only be achieved through careful design, selection, and proper installation.