The oil seal surface vertical to the center line of the shaft on the side that does not come in contact with substances to be sealed is called the back face. - It is chlorinated and aromatic hydrocarbon resistant.
4 What are Oil Seals and how do they work?
- When selecting a 6.0% 20Valve Cover Gasket, it is important to choose one that is specifically designed for your vehicle's make and model. Many aftermarket gaskets are available, but not all are created equal Many aftermarket gaskets are available, but not all are created equal
Many aftermarket gaskets are available, but not all are created equal Many aftermarket gaskets are available, but not all are created equal
6.0 valve cover gasket. It is crucial to ensure that the gasket you choose is compatible with your engine and will provide the necessary level of protection.
What are bearing isolators?
Before fitting the oil seal, it is essential to check that the oil seal, shaft and bore are clean and undamaged. The surfaces the oil seal will come into contact with must be free of sharp points or burrs. The sealing lip is fragile, so even minimal damage can cause a leak. It is also important that the shaft and bore are correctly finished.
Benefits of Oil Seals
Figure 5: JTEKT seal numbering system
Table 6: Codes and numbers used in seal numbers

Oil seals work by squeezing and retaining lubricant in a thin layer between the lip and the shaft. Perfect sealing is ensured by the hydrodynamic action of the rotating shaft, which in turn produces a slight pump action.

Assembling the oil seals is only possible with the right assembly tools. Due to the high risk of damage during assembly, it is important that you have tools with which you can work carefully. A bearing fitting tool set is ideal.
As type B with dust lip