Espey WKA300

Espey WKA300 For a larger view, please mouseover the image.
For a larger view, please mouseover the image.
Item Description
1 Seal ring
2 Tension spring
3 Chamber
4 End ring
4.1 Welding ring (as alternative)
5 Flat seal
6 Grease chamber
6.1 Barrier gas, suction chamber
7 Intermediate chamber
For a larger view, please mouseover the image.
  • Multi-part seal rings, radially cut
  • Chamber seal (modular design – can be combined in any order)
  • 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
  • Segmented seal rings for easy replacement
  • High reliability
  • Log-term operation time
  • Maintainability
Shaft diameter:
d = 20 ... 340 mm (0.79" … 13.39")
Operating pressure:
p = vacuum ... 1.5 bar (22 PSI) abs.
Operating temperature: t = -120 °C ... +500 °C (-184 °F … +932 °F) for carbon, max. 225 °C (437 °F) for PTFE compound, max. 300 °C (572 °F) with grease
Sliding velocity:
vg = max. 150 m/s (492 ft/s) for carbon,
max. 40 m/s (131 ft/s) for PTFE compound
Radial play: ±2.0 mm (±0.08")
Axial movement: theoretically unlimited
Recommended wear guard: >300 HB
Seal ring: carbon, PTFE compound
Chamber parts: 1.4571, Hastelloy®, Titanium, Inconel®, others
Tension spring: 1.4571, Hastelloy®, Titanium, Inconel®
  • Chemical industry
  • Metal production and processing
  • Pulp and paper industry
  • Food processing industry
  • Power plant technology
  • Machinery and plant building
  • Gases
  • Fumes and exhaust, solids containing, flammable (Atex), acid containing and toxic gases
  • (Solids containing) steams / liquid mist
  • Oil mist / penetrating oil
  • Water
  • Small and medium-sized fans / blowers
  • Bearing seals (gear box, motors)
  • Mixers, agitators, mills, dryers