Dual balanced pusher seal.

ProSEAL® HCD Series is a dual balanced pusher seal for general services, primarily for application in the petrochemical and chemical industry.

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  • Dual balanced pusher seal design
  • Available in face to back and back to back arrangement
  • Complete cartridge for ease of installation
  • Heavy duty seal faces designed for zero leakage
  • Multiple spring design for uniform load, shorter overall length and larger axial displacement
  • Seal faces are loosely inserted to assist in seal face replacement
  • Thrust ring is retained by drive lungs preventing spring falling out
  • Special design with pumping device for forced circulation, better cooling efficiency and better heat removal capability
  • Parts interchangeable between single and dual seal minimizes inventory requirement and maximizes design flexibility


  • Centrifugal Heavy Duty Pumps
  • Centrifugal API Process Pumps
  • Centrifugal General Purpose Pumps
  • Positive Displacement Pumps


Temperature -50 C to 220 C
Pressure Vacuum to 42 bar
Sliding Velocity Up to 23 m/s
Sizes 20 mm to 200 mm