The difference between shaft seal and oil seal
1, sealing method: the shaft seal is made of two very smooth ceramic pieces and pressed by spring force to achieve the sealing effect; The oil seal is only achieved by close contact between the ring body itself and the sealing surface.
2, function: shaft seal to prevent high pressure liquid from leaking out from the pump along the shaft, or outside air infiltration along the shaft; The function of the oil seal is to isolate the oil chamber from the outside world, seal the oil inside and seal the dust outside.
3, sealing parts: the shaft seal refers to the pump shaft end gland, the seal between the rotating pump shaft and the fixed pump shell; The oil seal refers to the sealing of lubricating oil, which is often used in the bearing of various machinery, especially in the rolling bearing part.
Shaft seal and oil seal are two kinds of seals with different performance, and should not be confused.
Extended information:
Oil seal features:
1, the oil seal structure is simple and easy to manufacture. Simple oil seals can be molded once, even the most complex oil seals, the manufacturing process is not complicated. The metal framework oil seal can be composed of metal and rubber only through stamping, bonding, inlaying, molding and other processes.
2, light weight oil seal, less consumables. Each oil seal is a combination of thin-walled metal parts and rubber parts, and its material consumption is very low, so the weight of each oil seal is very light.
3, the installation position of the oil seal is small, the axial size is small, easy to process, and make the machine compact.
4, the sealing function of the oil seal is good, and the service life is long. It has certain adaptability to the vibration of the machine and the eccentricity of the spindle.
5. Easy disassembly of oil seal and convenient inspection.
6, oil seal price is cheap.
