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  • Standard type
  • These types are made with a metal outer case and a PTFE lip. They are suitable for a wide range of temperatures from -90 °C to +260 °C.These lip seals can also be used for higher pressures of up to 10 bar (special types up to 25 bar) and rotational speeds of up to 40-45 m/s. Certain grades of PTFE are suitable for use in pharmaceutical and food applications. One important point is that PTFE lip seals do require a shaft with a harder, smoother finish.

  • 2. Natural rubberCompared with most synthetic rubber, natural rubber has good comprehensive mechanical properties, cold 
  • B) Housing-bore eccentricity
    As shown in Figure 9, housing-bore eccentricity is defined as being twice the eccentricity between the housing-bore center and shaft rotation center.

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  • Case study 1: Volkswagen

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