Non-contact type mechanical seals

You discuss mechanical seal, it is important that you figure out the difference between various sealing systems. There are three basic types: fluid lubricated mechanical seals, gas lubricated mechanical truck seal and touch off style or called non-contact gas lubricated mechanical seals.
The difference is in the fluid-lubricated sliding surface of the seal between the fluids. As a result, the mixed friction seals are usually applied use mixer. For dry running seals, two sliding surfaces in direct contact with each other. On the other hand, the non-contact gas-lubricated mechanical seals, in the operation of the sliding surface is not in direct contact. There are 1 ~ 5μm wide gap separating the surface, which is why this is referred to from the seal member often causes seal. When you double-mentioned gas damper seals should have this distinction. From this point on, we will only discuss the following non-contact gas lubricated mechanical security seals.
Gas seals are how to work it? At work, in between the two sliding surfaces should have a layer of only a few Xie meter gap, in order to produce voids, two sliding surfaces should be mutual disengagement. To achieve this, in the manufacture of a three-dimensional ring groove, which ensures the air static and dynamic play. In the seal member at the pressure difference generated aerostatic effect, while the aerodynamic effects generated by the rotation. The resulting force balance lift and closed, thereby forming a width of 1 to 5 Xie seal gap.