Fluid side face Source: www.indiamart.com
b) The area where the oil seal is seated is to be plunge ground in order to prevent wear grooves that normally tend to wear out the lip of the oil seal at a faster rate.
Minor lip The minor lip prevents the entry of dust and contaminants from outside.
Lubricant can be retained in the space between the main lip and the minor lip.

Common Oil Seal Failure Causes
Spring Seals
On some engines you have to remove the clutch-housing cover to reach the rear nuts.


For more detailed information, please see the following:


5. Keep it clean
It is important to choose the right type of oil seal for a given application, as it may need to address specific operational concerns such as:
Installation of the oil seal
The History and Applications of Oil Seals
First, an elastomer, most often nitrile, is vulcanised to a metal ring. This creates a stiffening effect that includes a specialised metal tension spring directly behind the sealing lip, keeping the oil seal firmly in place against the moving part.

