Oil seal performance is affected by not only the type and material of the selected oil seal, but also a variety of other factors, such as operating conditions, total eccentricity, rotational speed, the substance to be sealed, and lubrication conditions.
Figure 9 shows items relating to oil seal characteristics.1、For the factory
On most cars you need to remove several parts to get at the seal.
- One of the most common types of oil seals is the rubber seal, which is typically made from synthetic rubber materials such as nitrile or silicone. These seals are designed to withstand high temperatures and pressure, making them ideal for use in automotive engines and hydraulic systems.
- Now, thoroughly clean both the valve cover and the cylinder head surface with a suitable solvent to remove all old gasket material and any buildup
In conclusion, the piston oil seal is a critical component in an internal combustion engine. It plays a vital role in preventing oil leakage, reducing friction, and ensuring efficient engine operation. Regular inspection and maintenance of the piston oil seal are essential for maintaining the performance and longevity of the engine.
- In addition to their chemical resistance, cork rubber gaskets also have excellent thermal stability


Oil seals are always exposed to a lot of chemicals, both mild and harsh chemicals. The seals react by showing some signs like cracks, blisters, and discoloration especially when the chemical is harsh. This clearly shows that the chemical is not compatible with the seal, which goes as far as affecting its cross-link density (increase or decrease). When the cross-link density increases, the seal material becomes harder, but when it decreases, the seal material becomes softer.
How does an Oil Seal Work
Different Types of Oil Seals