PTFE, which is used in the well-known brand Teflon®, is less commonly used, but it is the preferred material for specific rotating seals in the chemical, food and pharmaceutical industries. This material is notable for having a very low frictional resistance and the best chemical resistance. It can also withstand a very wide range of temperatures in these types of seals; -80 ˚C to 200 ˚C. The shafts on which oil seals with PTFE lips are used require a harder and finer finish. Something like an axle sleeve can also be used to meet this requirement.
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oil seal types. Labyrinth seals are designed to provide a barrier to the leakage of oil by creating a tortuous path for the oil to flow through. V-ring seals, on the other hand, are designed to provide a more dynamic sealing solution by conforming to the shaft, thus preventing oil leakage.
Amongst the several applications of oil seals, these are the most common three applications – o-rings, spring seals, and lip seals.
Maintenance and Replacement of Gaskets
Replacing a distributor oil seal or gasket
What is an Oil Seal?
When included, the garter spring applies pressure to the sealing lip against the shaft, ensuring a tight seal. The choice of material, like that of the case, largely depends on the environment of use.


If this is not possible, you may be able to fit the lower retaining bolt into the upper mounting support, to hold the engine level. Or the gearbox may have to be jacked up and supported.
■Viscosity-index improvers: These additives help your engine oil perform as intended despite temperature fluctuations.
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I’m ready for my high mileage oil change!
For the housing stop installation technique, set the seal depth flush with the bore’s interior shoulder. This technique ensures that the seal is perfectly aligned with internal housing components. A depth gauge can be crucial here to confirm that the seal is positioned correctly.