Espey WD200

Espey WD200 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 ... 20 bar (290 PSI) abs.
Operating temperature: t = -120 °C ... +800 °C (-184 °F … +1,472 °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: ±1.0 … 5.0 mm (±0.04" … 0.2")
Axial movement: theoretically unlimited
Recommended wear guard: >300 HB (low pressure), >58 HRC (high pressure)
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
  • Power plant technology
  • Petrochemical industry
  • Food processing industry
  • Metal production and processing
  • Gases
  • Fumes and exhaust,solids containing, flammable (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, mills, dryer