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What is the oil seal?

Update:25 Dec 2017

Seal, that is, the seal of oil. It is commonly used in […]

Seal, that is, the seal of oil. It is commonly used in a variety of mechanical bearings, especially the dynamic bearing parts. Its function is to isolate the oil chamber and the outside world, the internal seal oil, external dust. Mechanical seal attributed to the sophisticated, complex structure of the mechanical foundation of one of the components, is a variety of pumps, reaction kettle, turbine compressor, submersible motor and other key components of the device. Its sealing function and service life depend on many factors, such as selection, the accuracy of the machine, the use of accurate devices.
The difference between the oil seal and other lip seals is that they have more resilient lips. The seal contact surface is very narrow (about 0.5 mm) and the distribution of contact stress is sharp. Typical structure of oil seal and lip contact stress diagram. Oil seal cross-section shape and the hoop spring, the lip on the shaft has a good follow-compensation. Therefore, the oil seal with a smaller lip radial force to obtain better sealing effect.