What is a floating seal and where is it usually used?

Introduction: Floating oil seal is a common sealing device, widely used in a variety of rotating equipment, such as pumps, fans, compressors, gear boxes and so on. Its main function is to prevent liquid or gas from leaking from the inside of the device and to protect the rotating shaft. This paper will introduce the definition, principle and wide application of floating oil seal in detail.

Floating oil seal definition: floating oil seal is a sealing device, composed of metal shell, sealing ring and lubricating oil three parts. Through the presence of lubricating oil, a layer of lubricating oil film is formed between the shell and the sealing ring, so as to achieve the sealing effect. The floating oil seal is usually installed on the rotating shaft, and the rotating shaft is isolated from the external environment to prevent liquid or gas leakage.

Working principle of floating oil seal: The working principle of floating oil seal is based on two key factors: lubricating oil and sealing ring structure. When the rotating shaft rotates, the lubricating oil forms an oil film, which reduces the contact between the sealing ring and the rotating shaft by lubricating friction. The seal ring is usually made of elastic material and is in contact with the rotating shaft through its special structure to form a reliable seal.

Wide use of floating oil seals: Floating oil seals are widely used in rotating equipment in various industries. They play an important role in:

Prevent liquid or gas leakage: One of the main functions of the floating oil seal is to effectively prevent liquid or gas from leaking out from the inside of the device to ensure the safety and stability of the equipment.

Protect the rotating shaft: The floating oil seal reduces friction and wear during contact with the rotating shaft, thereby extending the service life of the rotating shaft.

Improve the sealing performance of the device: The floating oil seal effectively improves the sealing performance of the device by forming a sealing film to ensure the normal operation of the equipment.

Conclusion: As an important sealing device, floating oil seal is widely used in various industries. It realizes the sealing and protection of the device through the lubrication of lubricating oil and the structure of sealing ring. Floating oil seals can not only prevent liquid or gas leakage, but also extend the service life of the rotating shaft and improve the sealing performance of the device. When selecting and using floating oil seals, ensure that the appropriate model and material are selected according to the specific requirements.

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