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Stationary and rotating face
Material of metal part

NISSIN - mechanical seal

NISSIN - mechanical seal
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The design of the mechanical seal consists mainly of two parts: a movable and a fixed part. The fixed part is usually a ring that is fixed in the pump housing. The movable part is mounted on the shaft and is compressed by means of a spring to the stationary part. Sealing with a mechanical seal is achieved with the help of secondary seals (bellows, rubber rings) and friction pairs. When choosing a mechanical seal, it is important to choose the material of secondary seals and friction pairs.

Materials of mechanical mechanical seals of the Nissin shaft

    Rubber material:
  • NBR (nitrile butadiene rubber), temperature resistance -20 to +120 C
  • EPDM (ethylene propylene rubber), temperature resistance -30 to +170 C
  • Viton (fluoro rubber), temperature resistance -30 to +185 C
  • PTFE (fluoroplast), temperature resistance -260 to +260C
    Friction pairs
  • SUS – metal (stainless steel)
  • CAR – graphite
  • CER – ceramics
  • SIC – Silicon carbide
  • TС – tungsten carbide

Visually, it is difficult to understand how these materials differ from each other (except fluoroplast), so it is easier to choose a material from taking into account the pumped medium and its temperature. Contact us, we will help you determine the material and choose the right mechanical seal for the Nissin pump.

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