ES single mechanical element 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

	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

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AHLSTAR APT process pump range
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AHLSTAR NPP/T non-clogging process pump range
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AHLSTAR WPP/T wear-resistant process pump range
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