- Despite the rise of electric vehicles, spark plug motors continue to hold a significant position in the global transportation sector. Their widespread use and continued development reflect their enduring importance in our daily lives. As technology advances, we can expect further improvements in spark plug design, enhancing the efficiency and sustainability of these motors.
- Applications
- The plug aspect of the shorty spark plug is where the magic happens—the part that fits into the engine, sealing the combustion chamber while facilitating the flow of electricity
- Despite these advancements, however, front hub oil seals still require regular inspection and maintenance to ensure their longevity and reliability. Drivers should check for signs of leakage, such as oil stains on the ground or a burning smell coming from the wheel well. They should also have their vehicles serviced according to the manufacturer's recommendations, including replacing the seal if it shows signs of damage or deterioration.
- A PCV valve cover gasket is essentially a seal that sits between the engine's crankcase and the PCV valve cover. Its primary function is to prevent oil leaks from the crankcase, ensuring that oil stays where it should be - lubricating the engine's moving parts, rather than escaping into the atmosphere. It also seals the vacuum created by the PCV valve, allowing for the controlled release of gases back into the intake manifold for re-burning, thereby reducing emissions.
In addition to these standardised types, the following special types are also available:
With minor lip
Type code
Table 2 b): Common types of oil seals (without spring)
Metal-cased oil seals are usually installed in a housing bore made of the same material. This allows for equal expansion and contraction of the materials during operation, preventing leakage. This type performs best when used in a steel housing.


In this blog, we attempt to highlight what are Oil Seals and the various Rotary Shaft Seals including Mechanical Face Seals, Water Pump Seals, Gland Packings, and V-Seals that are readily available.
An oil seal, also known as a shaft seal or dirt seal, prevents lubricants such as oil and grease from escaping along a rotating shaft. Oil seals are an important component in preventing leaks and contaminants from clogging various engines, pumps, and pipelines.
Installing and replacing oil seals can be a daunting task. But with the right knowledge, the results can be good. Here are 8 tips to guide you on what to look for when working with oil seals. Read on for more information.
In choosing the right oil seal type for your application, it is essential to assess factors such as speed, temperature range, pressure levels, chemical compatibility, shaft material, and installation space limitations. By considering these factors carefully, you can ensure that you select an oil seal that will provide optimal performance and longevity in your specific application.
No code: without minor lip
Figure 4 shows the features of a JTEKT oil seal.

oil valve cover gasket. It is important to ensure that the gasket is installed correctly and that the valve cover is tightened to the manufacturer's specifications to prevent leaks.
DIN
Figure 3: Sealing function of main lip radial load
* KOYO is a registered trademark of JTEKT.

oil tank gasket.
As the pressure increases, the radial load and the friction of the sealing lip increase in contact with the shaft. As with temperature, each oil seal has a recommended pressure for optimum performance. Excessive pressure causes the seals to wear more quickly and consequently have a shorter life.