English
中文简体The O-ring is a rubber sealing ring with a circular cross-section. Because of its O-shaped cross-section, it is called an O-ring, also called an O-ring. It began to appear in the middle of the 19th century when it was used as a sealing element for steam engine cylinders.
O-rings are suitable for installation on various mechanical equipment and can act as a seal in a static or moving state under specified temperatures, pressure, and different liquid and gas media. Various types of seals are widely used in machine tools, ships, automobiles, aerospace equipment, metallurgical machinery, chemical machinery, engineering machinery, construction machinery, mining machinery, petroleum machinery, plastic machinery, agricultural machinery, and various instruments and meters. element.
O-rings are mainly used for static sealing and reciprocating motion sealing. When used for rotary motion sealing, it is limited to low-speed rotary sealing devices. The O-ring is generally installed in a groove with a rectangular cross-section on the outer circle or the inner circle to play a sealing role.
O-ring seals still play a good role in sealing and shock absorption in environments such as oil resistance, acid and alkali, abrasion, and chemical erosion.
Therefore, the O-ring is the most widely used seal in hydraulic and pneumatic transmission systems.
Compared with other types of sealing rings, O-rings have the following advantages:
(1) Suitable for various sealing forms: static sealing, and dynamic sealing.
(2) The material is suitable for various purposes, the size and groove have been standardized, and the interchangeability is strong.
(3) Suitable for a variety of motion modes: rotary motion, axial reciprocating motion, or combined motion (such as rotary reciprocating combined motion).
(4) Suitable for a variety of different sealing media: oil, water, gas, chemical media, or other mixed media.
(5) Through the selection of suitable rubber materials and appropriate formula design, the effective sealing effect on oil, water, air, gas, and various chemical media can be realized. The temperature range is wide (-60℃～+220℃), and the pressure can reach 1500Kg/cm2 in fixed use (used together with the reinforcing ring).
(6) Simple design, compact structure, easy assembly, and disassembly
4. The cross-section structure of the O-ring is extremely simple and has a self-sealing function, and the sealing performance is reliable.
Since the structure of the O-ring itself and the installation part are extremely simple and standardized, it is very easy to install and replace.
(1) There are many kinds of materials
Can be selected according to different fluids: nitrile rubber (NBR), fluorine rubber (FKM), silicone rubber (VMQ), ethylene propylene rubber (EPDM), neoprene rubber (CR), butyl rubber (BU), poly Tetrafluoroethylene (PTFE), natural rubber (NR), etc.
(2) Low cost
(3) Dynamic frictional resistance is relatively small
Cixi Changhe Xinqide Sealing Parts Factory is a China custom bulk rubber ring factory, that provides custom rubber sealing rings for sale, welcome to consult.
