What does the UN in the seal ring stand for?
It is the most widely used in hydraulic and pneumatic transmission systems. Usually in Taiwan enterprises and Japanese enterprises, it is called O Ring.
UN represents the shaft bore seal, and the UN seal is as high as the two sealing lips
Sealing ring UN usually refers to U polyurethane hydraulic sealing ring, which can be used as axle or hole.
Sealing ring UN usually refers to U polyurethane hydraulic sealing ring, which can be used as axle or hole.An annular housing consisting of one or more parts fixed on a ferrule or washer of a bearing and forming a narrow labyrinth gap with another ring or washer to prevent leakage of lubricant and foreign substance invasion. The sealing ring is a rubber ring whose cross section is round. Because of its cross section of O type, it is called O type sealing ring.
