- Bore Diameter: The inside diameter of the bore housing where the seal will operate (sometimes referred to as the O.D. of the oil seal)
- In conclusion, oil seal dimensions play a critical role in the efficient operation of mechanical systems. By understanding the importance of oil seal dimensions, their common types, and how to measure them, you can ensure the proper selection, installation, and maintenance of oil seals, maintaining the reliability and efficiency of your mechanical systems.
Requirements of the shaft
Even more important than a correct interference fit of the Oil Seal is a perfectly smooth shaft in the region of the seal, particularly if shaft surface speed is high and the medium to be sealed is under a certain amount of excess pressure. The surface roughness of the shaft depends on the average profile depth Ra of the tool marks caused by the machining process. Oil Seals made of PTFE require, independent of the surface speed, a surface roughness of between 0,1 to 0,2 mm, because PTFE has less wear resistance than rubber seals. For normal circumstances, the shaft in the region of the seal must have a surface roughness of approximately: To summarize, the surface of the shaft in the region of the seal should not have noticeable machining marks. For pivoting shafts and other difficult or critical sealing applications, it is recommended that Oil Seals with a helical groove hydrodynamic pattern, which has a pumping effect, be used. When grinding and polishing, an axial movement of the grindstone along the shaft must be avoided in order to prevent machine lay.- However, like any emerging technology, the road to mainstream adoption is fraught with challenges. Manufacturers will need to ensure that these motors can withstand the rigors of daily driving, offer reliable performance across various climates and driving conditions, and most importantly, be cost-effective to produce. The initial investment in R&D and manufacturing infrastructure may be high, but the long-term benefits in terms of sustainability and operational efficiency could make the spark plug motor a cornerstone of future automotive engineering.
Detergents: This additive isn’t like your laundry detergent! It focuses on preventing deposits, rust, and corrosion from forming on the piston ring area, piston under-crown, and other surfaces that tend to overheat.
Identical application as type ST, but the outside rubber surface has a ribbed design to absorb thermal expansion of the housing. - Oil Seal Profiles
- Geographically, Asia Pacific is expected to dominate the oil seal market during the forecast period, followed by Europe and North America
oil seal 22 35 7. The region's strong manufacturing base and growing demand for automobiles and industrial machinery are expected to drive market growth in the region.
After the oil seal is positioned in the groove, apply even pressure to the oil seal using a seal driver or a similar tool. This will help to seat the oil seal firmly in the groove and prevent it from moving during use. Make sure to apply the pressure evenly and gently, as applying too much force can damage the oil seal or cause it to deform.


Even though it’s better than other materials in terms of toughness and wear time, it is preferably used in dry-running applications. The salient demerit of this material is its cost.
Size #: Corresponds to sizes found on our Oil Seal Size Chart. The interactive chart will display matching sizes based on the dimensions input for Shaft, Bore, and Width. The Oil Seal Size # is hyperlinked to our online store, which will display all sizes matching the selection.