Imported O-ring P series stationary sports p11o rubber sealing ring

  The working temperature of nitrile rubber is -25 ℃ -100 ℃, that of silicone rubber is -50 ℃ -200 ℃, and that of fluororubber is -15 ℃ -200 ℃
The imported oil resistant O-rings have different properties due to different materials
1) NBR imported O-ring has good air tightness, excellent oil resistance and wear resistance
NBR is a product with a wide range of applications, which is usually called nbro ring
2) Fluororubber (FKM or Viton) imported O-ring is also one of the sealing products with a wide range of applications
Due to its various excellent properties, fluororubber is widely used in petroleum, chemical, aviation, aerospace and other departments
Fluoroplastic FPM has high temperature resistance and can be used in -40 ℃ ~240 ℃
Viton is resistant to strong oxidizer, oil, acid and alkali
Viton can be used in high vacuum and high altitude environment, and is also suitable for oil environment
3) Silicone rubber O-ring has a very wide range of low and high temperature resistance performance (-60~250 ℃)
Silicone sealing products are widely used in the sealing of food, household appliances, lighting, medical devices and other related industries
Imported silicone O-ring is referred to as SIL imported O-ring for short
4) EPDM O-ring has good ozone resistance, heat resistance and chemical resistance, and EPDM O-ring also has good electrical insulation and hot water resistance Imported O-ring NBR fluoroelastomer is one of the sealing products with wide application and reliable sealing effect
However, if the O-ring is installed or used improperly, poor sealing effect or leakage may occur, and even the O-ring may be bitten
Generally, there are the following situations: 1 / the slotting size of the O-ring is not designed reasonably, and there is out of tolerance, especially when the depth size is too large, As a result, the compression deformation of the O-ring after installation is insufficient and the sealing effect is affected
Generally, the compression deformation of the O-ring after installation should be between 18% and 22%
When the section size of the O-ring is large, the compression relative deformation is small, while when the section size is small, the compression relative deformation is large
There is too much difference between the size of 2/o-ring and the actual installation size
The O-ring works when the section size is reduced after stretching, resulting in insufficient compression deformation and leakage
3/ when installing the O-ring, the sealing surface has no smooth chamfer or rounding, which scratches the O-ring and causes leakage
The material of 4/o-ring is not applicable to the sealing medium and becomes invalid after being eroded
The 5/o-ring will be aged and deteriorated after long-term use, and the elasticity will decrease or become invalid
Therefore, the O-ring is generally replaced during equipment overhaul