1. Clean the Surface
<Seal selection example>
Based on the above flowcharts, the oil seal type that meets the requirements shown in Table 3 would be the type code MHSA or HMSA shown in Table 4.
How does an Oil Seal Work

Advantages:
– Very good fitting stability avoiding pop-out of the seal
– Modern lip design provides low radial forces
– Superior radial stiffness, especially for very large diameters
– Cost effective for expensive elastomer materials
– Suitable for use in combination with axial seal
The metal case and spring material used in the oil seal should be selected based on the substance to be sealed.
Table 6 shows how to select the metal case and spring materials.
HIGH-QUALITY INDUSTRIAL OIL SEALS
Due to having a higher density, Viton has the widest temperature range of -40°F to over 400°F (-40°C to over 240°C) making it a perfect choice for higher temperature applications. Viton® also has the largest range of chemical resistance, i.e., it is resistant to silicone oil and grease, mineral/vegetable oil and grease, aliphatic, aromatic, and chlorinated hydrocarbons, non-flammable hydraulic fuels as well methanol fuels, and more.
Multiple materials and compounds are used to make oil seals. Some of the oldest materials still used today include felt and leather compounds. However, the trend in mass production has experienced a shift towards synthetic elastomers or rubber.


Auto oil seals are integral to the functionality of various automotive components, including the engine, transmission, and wheel assemblies. These seals are designed to contain lubricating oil and prevent leaks, contributing to the efficient operation and longevity of the vehicle. Proper maintenance and replacement of auto oil seals are essential to ensure the reliability and performance of the vehicle's systems.
H7 or H8
2. If the nominal bore diameter exceeds 400 mm:
H7