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Application environment health and safety of seals (oil seals)
In terms of seals (oil seals) and sealing effects, environmental sanitation has an impact on two aspects. The environment itself has a considerable impact on the choice of seal. At the same time, one purpose of the seal is to seal the fluid so that the nearby environment is protected from contamination. This includes eliminating the pollution caused by simply avoiding hot flashes and enclosing the most annoying, toxic or dangerous fluids in the system.
The "safety" of the seal also has a double meaning. If the environment is not "safe" for the seal (oil seal), the service life of the seal (oil seal) will be short, and many problems will be added to solve the problem of contamination and seal (oil seal) product loss. A seal that allows the release of toxic or dangerous products is a harmful thing to the environment.
But no aggregation is good in all respects. The basic problems involved are the same, and we must start with the most suitable seal (oil seal) for the job. This has to consider the relevant environmental factors, and if necessary, may be subject to environmental control based on the specific environmental problems to be solved.
The environmental factors involved include the surrounding environment and internal factors. The most obvious external environmental factors are temperature and pressure, but these factors usually have no fundamental impact except for the particular application (environment). The maximum possible ambient temperature range is -50℃ (extremely cold) to +50 ℃(very hot) and is suitable for most sealing synthetic rubber sealing materials. In this regard, only those low temperature environmental refrigeration equipment, liquid gas treatment systems, etc., as well as high temperature product transport equipment, combustion equipment, rocket engines, etc., which are involved in higher ambient temperatures, are involved.
In terms of external pressure, most seals are also seals (oil seals) that work under atmospheric conditions. There are some exceptions in this regard, such as the use of seals (oil seals) on high-altitude aircraft where environmental pressures may be much lower than standard pressure, and those that may be placed at 2 or 3 atmospheres in tunnels or Seals (oil seals) used on diving equipment with extremely high external pressure.
For applications where the atmosphere is abrasive, dusty or otherwise incompatible with simple sealing materials (environmental work). In chemical plants, air is often contaminated to a degree that, although not detrimental to health, can cause metal corrosion. The situation is similar for facilities or trucks used in salty atmospheres. The other is that in the case of mild abrasives such as dry dust, moderate dry abrasives, and severe abrasives such as wet abrasive grains and mud (working environment, working conditions), it will also pollute the work. environment of. The harshness of such working conditions often has an impact on the seal structure.
That is to say, the atmosphere containing ozone is also an occasion that is not conducive to work (work environment, working conditions). In an environment where electrical devices such as switches and motors exist, an ozone-rich atmosphere - even a moderately concentrated ozone atmosphere - can severely deteriorate the performance of some types of synthetic rubber sealing materials. This not only has an effect on the excess seal, but also has a certain degree of influence on the stored seal (oil seal).
Radiation is another external factor that may need to be considered in the field of nuclear engineering. Radiation may have an effect on both the sealing rubber seal material and the system lubricant.