An oil seal, also known as crankshaft retainer, is a small device, but essential to ensure the proper engine operation. It plays a key role in all moving parts of an engine, acting as a physical barrier. This mechanical seal fulfils the dual purpose of sealing a rotary shaft to maintain the necessary lubrication (avoiding leaks) and preventing other foreign matter from contaminating shafts and bearings in the rotary shaft equipment.
Installation inaccuracies
Rotary Wheel Of Auto Parts
Spring Seals
Although extremely flexible, silicone does have some disadvantages. Many silicone compounds have poor tensile strength, tear resistance, and abrasion resistance. If you are looking for a material that offers a higher tensile strength, while still offering high temperature resistance, look no further than Viton®.
Common causes of oil seal failure
Oil seal characteristics
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.



What are Oil Seals – A guide to Oil and Rotary Shaft Seals
An oil seal normally consists of three basic components: the sealing element, the metal case and the spring. The purpose of the sealing element is to stop the fluid from leaking between the shaft and housing. The metal case will give rigidity and strength to the seal while it is being held in the bore or recessed groove. The garter spring ensures constant pressure and maintains the radial force to the shaft, flattening the sealing edge to a defined width. The garter spring maintains the radial force exerted by the sealing lip around the shaft surface. All materials must be selected depending on the environment in which the oil seal will function.