What Are The Classifications of Oil Seals?

Number of hits：502025-04-19 17:07:10　

The main function of oil seals is to prevent lubricating oil or grease from leaking from the outside of the machine, and to prevent external dust, moisture, etc. from entering the inside of the machine. The structure and material of oil seals are diverse, so their types are also very rich. The classification of oil seals mainly includes the following:

1. Skeleton oil seal: This is a common type of oil seal. The so-called "oil seal" usually refers to the skeleton oil seal. It is composed of rubber and skeleton, and has two types: single lip and double lip. The double lip design also includes a dustproof auxiliary lip. The structure of the skeleton oil seal includes an oil seal body, a reinforced skeleton and a self-tightening coil spring. It is mainly used to isolate the lubricating parts from the external environment to prevent lubricating oil leakage.

2. Labyrinth oil seal: The labyrinth oil seal prevents the leakage of lubricating oil through a complex channel design, and is suitable for occasions with high sealing requirements.

3. Ordinary single lip oil seal: Suitable for high and low speed rotating shafts and reciprocating motion seals, can effectively prevent the leakage of mineral oil and water, and is suitable for environments with less dust and impurities.

4. Ordinary double-lip oil seal: with dustproof lip design, it can effectively resist the intrusion of dust and is suitable for environments with less dust and impurities.

5. Springless oil seal: especially suitable for low-speed working conditions and grease sealing, the linear speed is limited to 6 meters per second.

6. Exoskeleton single-lip oil seal: suitable for environments with less dust and impurities, and suitable for occasions where the rotation axis speed does not exceed 5 meters per second.

7. Exoskeleton double-lip oil seal: with dustproof lip design, suitable for environments with more dust and impurities, and the rotation axis speed does not exceed 5 meters per second.

8. Assembled single-lip oil seal: suitable for high temperature and high speed environments, with high installation accuracy and excellent heat dissipation, suitable for heavy load working conditions.

9. Assembled double-lip oil seal: with dustproof auxiliary lip design, suitable for high temperature, high speed and dusty environments, with high installation accuracy and excellent heat dissipation.

10. One-way reflux oil seal: An angled rib is provided on the air side of the lip, which uses the principle of fluid mechanics to produce a one-way pumping effect, and is suitable for occasions that require one-way sealing.

Choosing the right oil seal type, material, structure and brand requires considering many factors, including sealing occasions, working pressure and speed, use environment, cost and service life. Only by comprehensively considering these factors can we choose the right oil seal to ensure the normal operation and service life of the machinery. If you want to know more about oil seals, please feel free to consult us.