- The design of high pressure oil seals is crucial to their effectiveness. They are typically made with a lip or sealing edge that helps to create a tight seal against the shaft or housing They are typically made with a lip or sealing edge that helps to create a tight seal against the shaft or housing
They are typically made with a lip or sealing edge that helps to create a tight seal against the shaft or housing They are typically made with a lip or sealing edge that helps to create a tight seal against the shaft or housing
high pressure oil seal. Some seals may also have additional features such as springs or secondary lips to improve their sealing capabilities. The materials used in high pressure oil seals are carefully selected to ensure they have the necessary strength and resistance to withstand the pressures they will be subjected to.
As can be seen from the seal cross-section shown in Fig. 14.2, shaft seals are complex shapes that require advanced mold design and molding techniques (see Section 7.3 for discussion of fluoroelastomer molding). For some time, most shaft seals were made in the United States by compression molding. Injection molding of shaft seals is prevalent in Europe, and is being used increasingly in the United States. An advantage of compression molding is that preforms (usually rings cut from extruded tubing) are used that closely approximate the amount of stock required for the final parts, so compound waste is minimized. For injection molding, the amount of cured stock in the central sprue and runner (actually a thin sheet leading to the seal lip) is often large compared to the stock required for the final part, so the waste of high-cost fluoroelastomer may be high. Such waste is reduced in modern injection molding designs.
Seals, including oil seals, have undergone a great development in recent years and are totally unlike the original product. PTFE has taken over the oil seals market for modern engines mainly because traditional oil seals started causing more and more problems. Such as evaporation of chemical plasticisers from the elastomeric material, which eventually caused engine oil leakage. Now, the focus is more on durability and frequency of servicing.

ls3 valve cover gasket. OEM gaskets are recommended for LS3 engines to ensure a perfect fit and reliable performance.
Cold rolled carbon steel sheet
(JIS* SPCC)
■Viscosity-index improvers: These additives help your engine oil perform as intended despite temperature fluctuations.
We just discovered that one of the seals on our pumping system is leaking. Do you have any ideas as to what could have caused this, and can you offer some advice for selecting a good seal?
Auto oil seal Features
Figure 3: Sealing function of main lip radial load
* KOYO is a registered trademark of JTEKT.
Figure 4 shows the features of a JTEKT oil seal.
With minor lip
Type code
Table 2 b): Common types of oil seals (without spring)
Oil seals, also known as rotary shaft seals, are a type of gasket used to prevent lubricant leakage and contamination in rotating machinery by creating a barrier between the moving and stationary parts.
* KOYO is a registered trademark of JTEKT.