Espey WD100

Espey WD100 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
  • Split housing design
  • Multi-part seal rings, radially cut
  • Very small operation gap – low leakage
  • Dry running
  • Self-adjusting seal rings
  • Seal rings bear radial shaft movements
  • Compensates axial shaft movements
  • No sealing components mounted on the shaft and hence no additional shaft vibrations
  • Seal rings running contact-free – sliding faces and machine consume no additional power
  • Easy installation by split housing design (shaft removal not required)
  • Long-term operation time
  • Maintainability
  • Segmented seal rings for easy replacement
Shaft diameter:
d = 40 ... 340 mm (1.57" ... 13.39")
Operating pressure:
p = vacuum ... 2 bar abs. (29 PSI)
Operating temperature: t = –120 °C ... +500 °C
(–184 °F ... +932 °F) for carbon,
max. 225 °C (437 °F) for PTFE compound
Sliding velocity:
vg = max. 150 m/s (492 ft/s) for carbon,
max. 40 m/s (131 ft/s) for PTFE compound
Radial play: 2.5 ... 5.0 mm (0.1" ... 0.2")
Axial movement: theoretically unlimited
Recommended wear guard: >300 HB
Seal ring: Carbon, PTFE compound
Housing: 1.4021, 1.4571, Hastelloy®, Titanium, Inconel®, others
Tension spring/detent: 1.4571, Hastelloy®, Titanium, Inconel®
  • Chemical industry
  • Petrochemical industry
  • Food processing industry
  • Metal production and processing
  • Medium-sized and large fans/blowers
  • Mixers, agitators, mills, dryers
  • Waste incineration and removal
  • Clean gases*
  • Water


* Not applicable for toxic, solids containing gasesand exhaust gas.