O-ring is a circular rubber sealing ring with a circular cross-section, mainly used for mechanical components to prevent leakage of liquid and gas media under static conditions. In some cases. The O-ring can also be used as a dynamic sealing element for axial reciprocating motion and low-speed rotational motion.
O-ring is a common sealing element with a circular cross-section shape, which has many excellent characteristics and applications. This article will introduce O-ring from the aspects of material selection, structural characteristics, sealing principle, and application fields.
Improper design and use of O-rings can accelerate their damage and loss of sealing performance. The experiment shows that if the design of each part of the sealing device is reasonable, simply increasing the pressure will not cause damage to the O-ring.
The O-ring seal is a typical extrusion type seal. The compression ratio and tension of the cross-sectional diameter of the O-ring are the main contents of sealing design, which are of great significance for sealing performance and service life. The O-ring is generally installed in the sealing groove for sealing purposes.