- Regular maintenance, including the timely replacement of spark plugs, can significantly enhance an engine's performance and longevity. NGK MGB Spark Plugs, with their superior quality and dependable performance, make this maintenance process both effective and straightforward. Their easy installation and compatibility with a wide range of vehicles further add to their appeal.

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Heat resistance
By first finding out the dimensions of the inner and outer diameters and the height of the bore, you have all the data for the correct size of the oil seal. Of course, the oil seal must also be able to withstand the pressure, temperature and medium it is exposed to within the seal during the manufacturing process. You can read more about this in our oil seal selection guide.
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.


Lubricant


Over time, the seal lip(s) will wear a shallow groove into the shafting due to the pressure the seal imposes upon it. Visible scoring on the shaft indicates a genuine possibility that the seal will not perform as well as intended. The potential for lubricants leaking out and particulates working their way through the seal drastically increases when placed over a worn location.
Table 8 shows the housing design checklist.
Figure 8: Shaft runout
2. The most common types of oil seals are rubber-cased and metal-cased.
Select your oil seal type according to Table 2.

One of the key advantages of the 30-50-10 oil seal is its ability to provide a tight seal without compromising on flexibility. This means that the oil seal can effectively prevent oil leaks while allowing for smooth movement of the machinery or equipment it is installed in.
oil seal 30 50 10

Helix Seal
Rubber type
The oil seal within the wheel hub assembly is crucial for preserving the lubrication of the wheel bearings and protecting them from premature wear and damage. Proper maintenance of the oil seal wheel hub is essential to prevent oil leakage and maintain the efficiency of the wheel assembly. Regular inspection and replacement of worn or damaged oil seals are vital to ensure the continued reliability and safety of the vehicle.