- The sealing lip of PTFE oil seals is protected by a plastic sleeve, which can normally be used as a mounting aid. Therefore, the sleeve should remain in place until the seal is installed.
From this kind of standard immersion testing, one would expect that bisphenol-cured VDF/HFP/TFE fluoroelastomers would not give good service life as oil seals. Similar tests with other elastomers, such as HNBR, silicone, and acrylic rubbers, show less loss of elongation. However, it is found that, in actual service, FKM shaft seals6 have much longer service life than seals of the other elastomers. In a Japanese study of FKM lip seals, rear crankshaft seals from high-mileage automobiles (70,000–280,000 mi ie, 110,000–450,000 km) were collected and examined. No serious oil leakage was found when the seals were removed from the engines. Some deposits were found around the seal lip and on the garter spring holding the lip against the shaft. No surface cracks were found on the seal lip, and only minor crazing on the crankcase side of the flexure portion of the seal in some samples. The seal compositions were not noted, but most were probably VDF/HFP/TFE elastomers with 68–69% fluorine content.
What are oil seals?
- The shaft must not have any sharp edges. If necessary, have the edges removed by a specialist.
― - Undersized Installation Tool: If the installation tool’s driving diameter is too small, it can deform the seal during installation. Choose a tool with an appropriate driving diameter to avoid this problem.
- In conclusion, the cylinder gasket, a seemingly insignificant part, is a vital element in the complex machinery that powers our vehicles and industrial equipment. Its role in maintaining engine health cannot be overstated. Understanding its function and importance can help prevent potential issues and ensure the smooth and efficient running of any engine. Remember, a healthy engine starts with a reliable cylinder gasket.