Element seals

Optimal seal solution for AHLSTAR pumps

ES balanced single mechanical element seal is designed for the AHLSTAR A, APP, NPP and WPP pumps as an integral part without any additional components. This optimizes the space between the seal and the seal chamber, and ensures reliable operation.

es seal for ahlstar pumps
Main benefits
  • The design of the ES seal is simple but robust, enabling fast and easy installation and maintenance.
  • Integrated shaft seal protects the shaft from the process liquids.
  • Pressure variations or dropouts of the pumped liquid will not open the slide faces.
  • Can be used without flushing, with recirculation flushing or with external flushing.
Main applications

An optimal solution for water and light process applications:

  • clean and slightly contaminated liquids
  • viscous liquids
  • fibrous slurries up to 3% consistency
  • temperature up to 140°C / 284°F depending on the seal flushing arrangement and seal chamber pressure
Key characteristics
SI units US units
Pmax 16 bar 232 psi
Vmax 10 m/s

33 ft/s

Tmax 140°C 284°F
Seal surface SiC/SiC SiC/SiC
O-ring EPDM or FKM EPDM or FKM
Material 316 Stainless Steel (EN 1.4401, EN 1.4436) or Duplex EN 1.4462
316 Stainless Steel (EN 1.4401, EN 1.4436) or Duplex EN 1.4462
Related links
  • AHLSTAR A process pump range
    AHLSTAR A end-suction single-stage centrifugal process pumps are used for demanding industrial applications to ensure process reliability, high efficiency and low operating costs.

  • AHLSTAR APP/T process pump range
    AHLSTAR APP/T end-suction single-stage centrifugal process pumps are used for demanding industrial applications to ensure process reliability, high efficiency and low operating costs.

  • AHLSTAR NPP/T process pump range
    AHLSTAR NPP/T non-clogging end-suction single-stage centrifugal process pumps are designed for industrial large solids containing liquid or abrasive slurry applications to avoid plugging.

  • AHLSTAR WPP/T process pumps range
    AHLSTAR WPP/T wear-resistant end-suction single-stage centrifugal pumps are designed for abrasive and erosive pumping applications, such as lime milk and mud, and coating pigments.
How can we help you?

Talk or write to our experts to find your best solution.