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Flowserve-BW Seals-Slurry Seals - RIS

Slurry Seals - RIS


The RIS seal has a unique, non-clogging design that does not utilize springs or bellows. The innovative design of the adaptive components allows the seal to be installed from the wet-end of the pump and to be adjusted externally. With many pump designs, the seal may be reset automatically during impeller clearance adjustment.


  • Power
  • Oil & Gas
  • Chemical
  • Water
  • General Industry

industry sectors

  • Nuclear
  • Conventional Steam
  • Geothermal
  • Combined Cycle
  • Concentrated Solar Power
  • Biomass and MSW
  • Upstream Exploration & Production
  • Downstream Processing
  • Basic
  • Specialty
  • Biofuels
  • Pharmaceutical
  • Water
  • Waste Water
  • Agriculture
  • Water Management
  • Pulp & Paper
  • Mining
  • Steel & Primary Metals
  • Food & Beverage
  • Corn Wet Milling & Ethanol
  • Other Industries
Operating Parameters

Up to 10.3 bar (150 psi), up to 110°C (230°F), up to 11 m/s (35 fps)

Features & Benefits
  • A smoothly contoured flexible rubber element holds the seal faces together and absorbs relative shaft movement when the pump is in operation.
  • A true non-clogging design provides longer MTBF with the rubber in shear component.
  • External adjustment capability compensates for minor seal wear with no pump disassembly and compensates for pump misalignment.
  • No dynamic o-ring provides for longer MTBF by eliminating seal face hang-ups.


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