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How do oil seals work?
As an example, this oil seal has a part number that corresponds to a Shaft Size of 3”, a Bore Size of 4”, a Width Size of 0.625”, a Style of TB2, and is made of Viton material. Conversely, the same size oil seal in Metric has a Shaft Size of 76.20 mm, a Bore Size of 101.60 mm, and a Width Size of 15.88 mm.
Advantages of Rubber Valve Cover Gaskets
Put the jack and wooden spacer under the sump and raise the engine just enough to free the supports.
TYPES OF OIL SEAL
cold tolerance is relatively insignificant.


Main lip The main lip is the most critical component of the seal.

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.