There are several materials used to manufacture oil seals. They are discussed below.
- Before installing the new spark plugs, it is important to check and adjust the gap to ensure proper ignition. Use a gap gauge to measure the gap between the center and ground electrodes of the spark plug. Refer to your vehicle's owner's manual for the correct gap specifications.
- Moreover, high temperature oil seals also contribute to energy efficiency. By preventing oil loss, they ensure that the lubricating system operates at peak efficiency, reducing the need for frequent oil changes and minimizing energy waste due to friction By preventing oil loss, they ensure that the lubricating system operates at peak efficiency, reducing the need for frequent oil changes and minimizing energy waste due to friction
By preventing oil loss, they ensure that the lubricating system operates at peak efficiency, reducing the need for frequent oil changes and minimizing energy waste due to friction By preventing oil loss, they ensure that the lubricating system operates at peak efficiency, reducing the need for frequent oil changes and minimizing energy waste due to friction
high temp oil seal. This not only reduces operational costs but also contributes to environmental sustainability.
Figure 5 explains the JTEKT seal numbering system.
Seal numbers consist of
(1) the seal type code,
(2) the spring code,
(3) the lip type code,
(4) the dimensional numbers, and
(5) the special type code,
and Table 6 shows examples of each of these codes/numbers.

As shown in Figure 1, sealing devices come in two types: contact and non-contact.
Oil seals are among the major contact type sealing devices.
Developments and issues
When they are subjected to hot & pressured oil, or hot & pressured gas, they will compress. These seals reduce in size and become more compact. Afterward, they store the mechanical energy generated by the heat and pressure, which is why they can maintain a leak-proof mating surface.
Figure 1: O.D. (outside diameter) wall material


Why is mechanical seal important in this situation? It is because the rotating shaft has to move in a wet environment, but there should not be the leakage of pressurized fluid. Hence, the role of a seal is quite critical.
Wear and oil loss remains two of the most frequent signs of engine seal failure and, if not paid attention to, it can give rise to a breakdown in the vehicle’s system. Regular maintenance and routine oil changes minimize the issues associated with oil seals and potential oil loss.