Japan NOK imported O-ring high temperature resistant, wear-resistant and corrosion-resistant mechanical seal ring

Japan NOK imported O-ring high temperature resistant, wear-resistant and corrosion-resistant mechanical seal ring
O-ring series: imported O-ring imported O-ring 0-ring repair box silicone O-ring fluororubber O-ring sealing strip EPDM O-ring fluororubber sealing strip silicone sealing strip Teflon coated O-ring GLAST seal UN oil seal C-ring rectangular ring Skeleton oil seal series: imported skeleton oil seal imported oil seal fluororubber oil seal silicone oil seal imported metal oil seal high temperature and high pressure oil seal stainless steel (PTFE) oil seal TC skeleton oil seal TB skeleton oil seal Imported oil resistant O-rings have different product properties due to different materials
1) NBR imported O-ring has good air tightness and excellent oil resistance and wear resistance
NBR is a product with a wide range of uses, which is usually called nbro ring
2) Fluororubber (FKM or Viton) imported O-ring is also one of the widely used sealing products
Fluorine glue is widely used in petroleum, chemical, aviation, aerospace and other departments because of its excellent properties
Fluoroplastic FPM has high temperature resistance and can be used in the environment of - 40 ℃ ~ 240 ℃
Viton is resistant to strong oxidant, oil, acid and alkali
Moreover, Viton can be used in high vacuum and high altitude environment, and it is also suitable for oil environment
3) Silicone rubber O-rings have a wide range of low and high temperature resistance (- 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-rings are referred to as SIL imported O-rings 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 butyl fluoride rubber is one of the sealing products with wide application and reliable sealing effect
However, if the O-ring is installed or used improperly, there will be poor sealing effect or leakage, and even O-ring is bitten
There are usually the following situations: 1 / the slotting size design of O-ring is unreasonable, and there is out of tolerance, especially when the depth size is too large, As a result, the compression deformation of O-ring after installation is insufficient, which affects the sealing effect
Generally, the compression deformation of O-ring after installation should be between 18% ~ 22%
When the section size of 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 will scratch the O-ring and cause leakage
The material of the 4 / O-ring is not suitable for 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 be reduced or invalid
Therefore, the O-ring is generally replaced during equipment overhaul Main uses of NBR: It is often used to make all kinds of oil resistant molded products, such as O-ring, oil seal, diaphragm, valve, bellows, etc
it is also used to make rubber plate and wear-resistant parts, and oil resistant products, such as oil pipe, tape, nitrile rubber O-ring, rubber diaphragm and large oil bag 2、 Advantages of NBR: 1) Excellent performance and long service life
The working life of dynamic pressure seal is 5 & mdash; longer than that of conventional rubber seal products; 10 times, up to tens of times, and can have the same service life as the sealing matrix under some conditions 2) The friction resistance is small, and the dynamic and static friction forces are equal, which is & ldquo; 0” V-shaped rubber ring 3) Strong wear resistance, with automatic elastic compensation function after the sealing surface is worn 4) NBR has good self-lubricating performance
It can be used as oil-free lubrication seal