The Lodge brand is synonymous with quality cast iron cookware. Their skillet set typically includes a 10.25-inch and a 12-inch skillet, both pre-seasoned and ready for use right out of the box. These skillets are perfect for frying, sautéing, and even baking cornbread. Lodge’s commitment to durability and performance makes this set a favorite among home cooks.
- 4. Double Platinum Spark Plugs
- For drivers looking to further enhance their engine's performance, there are also performance spark plugs available. These plugs are designed for high-performance engines and racing applications, providing a more powerful spark and improved combustion. Performance spark plugs are typically made from exotic materials such as silver, gold, or palladium, making them more expensive than standard spark plugs.
- Conclusion
- Applications of the 35x47x7 Oil Seal
Fluoro natural rubber (FPM - FKM - Viton)
- Proper installation and maintenance of skeleton oil seals are crucial for their effectiveness. Any damage or wear to the seal can compromise its ability to prevent leakage and contamination, so regular inspections and replacements are necessary to ensure optimal performance.
PTFE material is a perfect ingredient in making more reliable oil seals. These materials are used to make oil seals that can resist dry or unlubricated operations. PTFE oil seals, which are also called teflon oil seals, have a thermal strength ranging from -202 degrees Fahrenheit to 392 degrees Fahrenheit and an excellent chemical resistance. Oil seal PTFE is considered as the future of radial shaft seals.
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.

Other important factors are ensuring the hardness and roughness of the shaft are correct. A shaft hardness of HRC 45 is recommended for a rubber sealing lip, with a roughness of Ra 0.4-0.8. A higher shaft hardness of HRC 60 and shaft roughness of Ra 0.1-0.4 is recommended for a PTFE lip.
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VMQ, also known as silicone, is also used for oil seals, but this is less common because the mechanical strength of VMQ is low and this material has poor wear-resistance This makes it less suitable for dynamic applications, but it can withstand fairly low and high temperatures from -60 °C to 200 °C. Many types of VMQ are also suitable for contact with pharmaceutical and food products, so VMQ is an option worth considering. VMQ oil seals are usually available on request.
However, rubber-cased seals do have limitations. For example, during installation, shear stresses can build up between the seal and housing wall, causing the seal to release itself.


Under the action of the skeleton oil seal, the rigidity of the oil film just makes the oil film and the air contact end form a crescent surface, which prevents the leakage of the working medium and realizes the sealing of the rotating shaft. The sealing ability of the oil seal depends on the thickness of the oil film on the sealing surface. If the thickness is too large, the oil seal will leak; if the thickness is too small, dry friction may occur, causing the oil seal and shaft to wear; if there is no oil film between the sealing lip and the shaft, it is easy to cause heat and wear. . Therefore, when installing, it is necessary to apply some oil on the sealing ring, and at the same time ensure that the skeleton oil seal is perpendicular to the axis line. If it is not perpendicular, the sealing lip of the oil seal will drain the lubricating oil from the shaft, which will also lead to excessive sealing of the lip. wear. During operation, the lubricant in the casing seeps out a little, so that it is ideal to form an oil film on the sealing surface.




Oil seals serve an important function in preventing lubricant leaks by closing in the spaces between the parts of the rotary shaft equipment. They also prevent dirt, dust, and other contaminants from clogging up the unit. Having them properly installed enables engines, pumps, and pipes to operate more efficiently.
Fit the new gasket to the cover or head — whichever the old gasket was fixed to.
Seals are classified by O.D. wall material, lip type, and whether they have a spring or not.
Major oil seals are specified in ISO 6194-1 and JIS B 2402-1.
Table 2 shows the common types of oil seals, while Table 3 shows the features of each type of oil seal.
Table 4 lists the JTEKT oil seal type codes and corresponding ISO and JIS standards.

