What should you take into account when selecting an oil seal? Different types of oil seals and various types of materials are available, each designed for specific uses. It is also important to select the right size of oil seal for the best results. For this reason, selecting the right oil seal requires adequate understanding of the application in which it will be used.
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- Oil seals are typically made from materials such as rubber,PTFE, or synthetic elastomers, which possess excellent resistance to heat, oil, and other contaminants. These materials are carefully chosen for their ability to maintain their shape and flexibility over time, ensuring consistent performance.
- An outer case, a body made of metal or provided with a rubber layer
2) Special seal types and their features
All are fitted with a spring to preload the sealing lip. All these types are for non-pressurised or low-pressure applications up to 0.5 bar for diameters of a limited size. For diameter of 500 mm or more, the maximum pressure is 0.1 bar. For higher pressures, special types or PTFE lip seals can be used.
JTEKT provides special seals for use in a wide variety of machines and applications.
Table 5 lists the major special seals, their shapes, and their features.
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If you require any assistance in discovering the factors that lead to the right oil seal choices, the Simply Seals Team is happy to assist you!
Oil seals, also referred to as shaft seals, are widely used to prevent the leakage of medium (such as oils and grease) along a rotating shaft. This leak prevention is primarily achieved by the sealing element which can be made from a wide range of materials that are chosen according to each application. They are commonly used in gearboxes, hydraulic cylinders, and related components.
Common causes of oil seal failure

oil seal in motor. They are specially engineered to provide a tight seal that can withstand the rigors of daily use. Without proper oil seals, the motor can suffer from oil leaks, reduced efficiency, and ultimately, complete breakdown.
(7) Special attention should be paid to prevent dust from immersing in the oil seal.