Use a flat paint scraper, or the smooth side of an old hacksaw blade, to remove very carefully all traces of carbon and old gasket from both faces.

rotary shaft oil seal. It is important to choose a high-quality seal that is compatible with the requirements of the system to ensure optimal performance and longevity.
Another type of seal design has the metal encased in rubber (Figure 2.11).
Different Types of Oil Seals


6. Ensure that the oil seal solidifies

Figure 2: Typically shaped oil seal and component nomenclature