1. What is floating seal?
Floating seal is a special mechanical seal, generally composed of a ferroalloy material floating ring and a matching nitrile
rubber O-ring. It is a compact mechanical seal method developed to adapt to the harsh working environment. It has the
characteristics of strong anti-pollution ability, abrasion resistance, impact resistance, reliable work, automatic end face wear
and so on. The advantages of compensation and simple structure are the most common applications in construction
machinery products, and are also widely used in various conveyors, sand processing equipment, and concrete equipment.
2. Application range of floating seal:
Floating oil seals are currently mainly used in coal mine machinery as the sprocket of the scraper conveyor, the reducer and
the transmission mechanism, rocker arm, drum, etc. of the coal mining machine. In addition, floating oil seals are widely
used and mature in construction machinery and equipment, and are often used in planetary reducers in the walking part of
construction machinery to dynamically seal the end faces of parts. However, due to the small number of other industries, the
lack of basic theoretical data and use experience, the failure phenomenon is more common in the use process, and it is
difficult to achieve the expected results.
3. Advantages and disadvantages of floating oil seals:
Advantages of floating oil seals are stable sealing performance, reliability, long life, and a wide range of working parameters
(working pressure up to 30 MPa, working temperature -100~200℃); it is especially suitable for gas medium in centrifugal
compressors Sealing can also achieve no leakage to the atmosphere, and is suitable for sealing of flammable, explosive,
toxic, and precious gas media.
Conversely, the disadvantage of floating oil seals is that floating ring processing requirements are high, a special sealing oil
system is required, and there are many internal leakages, but in essence it is still internal circulation leakage, which is
qualitatively different from the leakage of mechanical seals.