How to Calculate the Compression Amount of the Floating Seal？

Abstract: The compression amount of the floating seal plays a crucial role in determining its sealing performance and longevity. Floating seals are commonly utilized in mechanical equipment to seal liquids or gases through the movement of mechanical components. It is essential to understand the calculation method for the compression amount of floating seals in order to effectively utilize them.

The compression amount of the floating seal O-ring refers to the extent to which the O-ring is compressed under normal working conditions. During operation of the mechanical equipment, the floating seal O-ring is installed on the floating seal seat and compressed by the pressure of the floating seal seat. This compression creates a tight seal between the contact surfaces of the two floating seal rings, preventing oil leakage. The size of the compression directly impacts the sealing effectiveness of the floating seal. If the compression amount is too small, the floating seal will lack sufficient pressure, leading to potential oil leakage. Conversely, if the compression amount is too large, it can effectively prevent oil leakage but will also increase friction, reduce the efficiency of the mechanical equipment, and potentially result in cold welding occurrences.

The compression amount of the floating seal O-ring is typically determined and manufactured according to the specific requirements of the mechanical equipment. Designers consider factors such as the working environment, rotational speed, and oil pressure to determine the compression amount, usually expressed in millimeters or percentages. When calculating the compression amount, it is important to first consider the material characteristics of the floating seal. Different materials have different elastic moduli. Additionally, understanding the working conditions of the floating seal, including pressure and temperature, is crucial as they directly impact the calculation of the compression amount. Accurate measurement and recording of the pressure and temperature where the floating seal is located is essential. Finally, calculate the compression amount based on the material characteristics and working conditions.

Due to external compression forces and the permeation of liquids or gases, the calculated compression amount of floating seals serves as a reference only in practical applications. When using floating seals, it is necessary to consider multiple factors for their design and selection comprehensively. Regular inspections are important, and in the event of oil leakage or damage, adjustments or replacements of the floating seals are required. Maintenance and cleaning should be emphasized to ensure sealing effectiveness and prolong service life.