However, when you actually select the oil seal to use, the most important factors are past success history and points of improvement, so it is not necessary to follow this order to the letter.
All About Oil Seals
Polyacrylate (ACM) Oil Seals
Figure 7: Recommended housing shoulder diameters
Oil seals are available in an immense range of sizes, for shafts from a few millimetres to several metres. Once the shaft diameter, groove diameter (housing diameter) and groove width are known, selecting an appropriate oil seal is a simple task. An oil seal or its product description is usually associated with three dimensions, for example 6x15x4. These refer to the sizes of the hardware for which the oil seal is designed. In this example, this oil seal is suitable for: 6-mm shaft diameter x 15-mm groove diameter x 4-mm minimum groove width.

distributor oil seal. It is important to make sure that the new seal is properly seated and sealed to prevent any oil leaks in the future.
Refit all the components in the reverse order of dismantling.
Condition: New