The versatility of waffle robes is another reason for their popularity in bulk purchases
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.Case study 3: Product changes in oil seals
This technique is used when the seal depth must match the housing surface precisely. It involves stopping the installation tool at the machined housing face. Ensure the tool is perfectly perpendicular to the shaft for best results. This technique is ideal for applications requiring exact seal positioning relative to the housing face.
Rubber Valve Cover Gasket: Essential Sealing Component in Vehicle Engines
Stuff clean rags into the cylinder bores and all water and oil passages and bolt holes to catch scrapings and dirt.
Strike Plate Installation
Most oil seals consist of some basic elements that configure their structure, such as the sealing element, the metal case, and the spring:
2. Use the correct lubricant
When the total eccentricity is excessive, the sealing edge of the seal lip cannot accommodate shaft motions and leakage may occur.
Total eccentricity is the sum of shaft runout and the housing-bore eccentricity.
Total eccentricity, shaft runout and housing-bore eccentricity are generally expressed in TIR (Total Indicator Reading).
Nitrile is suitable for environments that have a temperature range of -30 degrees Fahrenheit to 250 degrees Fahrenheit. It is compatible with a variety of fluids, such as hot & cold water, silicone oil, animal & vegetable fat, hydraulic fluid, and gas oil. Nitrile is also a perfect material to use for any application that needs shock absorbers as it’s resistant to grease and abrasion.
Nominal seal O.D.
D, mm
Figure 4.4. Scanning electron microscope (SEM) image of the surface quenched for (A) uncured rubber and (B) transmission electron microscope (TEM) image for cured rubber [64].
Engine oil seals are vital components in the automotive engine system, designed to prevent the leakage of lubricating oil and the ingress of contaminants. These seals play a critical role in maintaining the proper lubrication of the engine components, including the crankshaft, camshaft, and other critical parts. Engine oil seals contribute to the efficiency and longevity of the engine by preventing oil leaks and ensuring optimal performance.
CS
Maintenance and Replacement:
The metal used in the outer case of oil seals is usually made of carbon steel. Upon request, and depending on quantities, a different type of steel (such as stainless steel) can be used.


Spring The spring supplements the tightening force (i.e., the lip radial load) to ensure enhanced sealing performance and tight contact between the shaft and the sealing edge.The spring also prevents the deterioration of main lip sealing performance caused by high heat or other such factors.

Figure 3: Sealing function of main lip radial load
* KOYO is a registered trademark of JTEKT.