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Rubber Bellow Seal

Bellows seals

Rubber Bellow Seal

  • Shaft10 to 100 mm
  • Pressure8 bar (max)
  • Temperature−20 to 80 °C

The Rubber Bellows Mechanical Seal is a highly versatile, non-pusher type seal engineered for a wide array of domestic, commercial, and industrial pumps. Unlike pusher seals that rely on dynamic O-rings that slide along the shaft, this design utilizes a flexible elastomeric rubber bellows to provide the necessary spring pressure and structural sealing. Because the rubber bellows is locked onto the shaft, it eliminates dynamic axial sliding, preventing the shaft from becoming scored, worn, or fretted over time.

Generally used in

Hot and cold water pumps, oil pumps, refrigeration compressors and fuel injection pumps.

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Material configurations
Seal facesCarbon / SiC / TC vs Ceramic / SiC / TC
Secondary sealsNeoprene / Viton / EPDM
Metal partsSS-316, SS-304
Operating capabilities
Shaft diameter10 to 100 mm
Pressure8 bar (max)
Temperature−20 to 80 °C
Speed2900 rpm (max)

Custom sizes and material combinations are made to your drawing. Confirm duty conditions with us before ordering.

Related seals

  • Bellows seals

    Metal Bellow Seal

    Up to 350 °C

    Shaft
    25 to 100 mm
    Pressure
    25 bar (max)
    Temp
    −30 to 350 °C

  • Bellows seals

    Teflon Bellow Seal

    For acids and alkalis

    Shaft
    16 to 80 mm
    Pressure
    5 bar (max)
    Temp
    −20 to 90 °C

  • Single spring pusher seals

    Conical Spring Seal

    Compact pusher seal

    Shaft
    10 to 100 mm
    Pressure
    7 bar
    Temp
    −20 to 140 °C