Application Scope And Advantages Of O-ring
O-ring seals are suitable for installation on various mechanical equipment, and play a sealing role in static or moving states under specified temperature, 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 a low-speed rotary sealing device. 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 a widely used seal in hydraulic and pneumatic transmission systems.
Compared with other types of sealing rings, O-rings have the following advantages:
--Suitable for various sealing forms: static sealing, dynamic sealing
Suitable for a variety of materials, dimensions and grooves have been standardized, strong interchangeability
-- Suitable for a variety of motion modes: rotary motion, axial reciprocating motion or combined motion (such as rotary reciprocating combined motion)
--Suitable for a variety of different sealing media: oil, water, gas, chemical media or other mixed media
Through the selection of suitable rubber materials and proper 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).
--Simple design, compact structure, easy assembly and disassembly
The cross section of the O-ring is simple in structure, 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 simple and standardized, it is easy to install and replace.
--Material varieties include: nitrile rubber (NBR), fluorine rubber (FKM), silicone rubber (VMQ), ethylene propylene rubber (EPDM), neoprene rubber (CR), butyl rubber (BU), polytetrafluoroethylene (PTFE), natural rubber (NR), etc.
--Low cost
--Dynamic friction resistance is relatively small
