Suitable for KSB's UPA submersible motors


  • contaminated water 
  • seawater


  • Single cartridge seal

Technical Data

  • Operating pressure: 
    • Up to 20 bar, dynamic
    • Up to 30 bar, static 
  • Temperature: 0 °C to 80 °C


Single, balanced cartridge seal, bi-directional, tailored to the seal installation space of the submersible motor.

No adjusting dimension required. Easy installation and removal also under difficult external conditions.

The permissible spring travel accommodates for the technical requirements of the motor shaft and thrust bearing. Depending on the size, the sleeve of the mechanical seal also houses the connection between coupling and pump, thus keeping the shaft dry.

Further technical information for 4Spider