Espey WD500

Espey WD500 For a larger view, please mouseover the image.
For a larger view, please mouseover the image.
Item Description
1 Flat seal
2 Housing, 2-piece
3 Seal ring
4 Tension spring
5 Detent
  • Multi-part seal rings, overlapped mortised with gas tight Joints (adjusting)
  • Split housing design
  • Lowest possible operation gap - lowest leakage
  • Dry-running
  • Self-adjusting seal rings
  • Seal rings bear radial shaft movements
  • Compensates axial shaft movements
  • Short axial installation length
  • No sealing components mounted on the shaft and hence no additional shaft vibrations
  • Easy installation by split housing design (shaft removal not required)
  • Long-term operation time
  • Maintainability
  • Segmented seal rings for easy replacement
Shaft diameter:
d = 45 ... 340 mm (1.77" … 13.89")
Operating pressure: p = vacuum ... 3 bar (44 PSI) abs. (depends on peripheral velocity)
Operating temperature: t = -120 °C ... +500 °C (-184 °F … +932 °F) for carbon
[700 °C (1,292 °F) for blast furnaces],
-120 °C ... +150 °C (-184 °F … +302 °F) for PTFE compound
Sliding velocity:
vg = max. 40 m/s (131 ft/s)
Radial play: ± 2.5 … 5.0 mm (± 0.1" … 0.2")
Axial movement: theoretically unlimited
Recommended wear guard: >58 HRC
Seal ring: Carbon, PTFE compound
Housing: 1.4021, 1.4571, Hastelloy®, Titanium, Inconel®, others
Tension spring / detent: 1.4571, Hastelloy®, Titanium, Inconel®
  • Chemical industry
  • Waste incineration and removal industry
  • Pulp and paper industry
  • Lime, cement and gypsum industry
  • Mining industry
  • Water and waste water technology
  • Gases
  • Fumes and exhaust, solids containing, flammabale (Atex), acid containing and toxic gases
  • (Solids containing) steams / liquid mist
  • Oil mist / penetrating oil
  • Water
  • Medium-sized and large fans / blowers
  • Bearing seals (gear box, motors)
  • Steam turbines
  • Mixers, agitators, dryers
  • Mills (ball, hammer, beater mills)
  • Centrifuges