Espey WKA3

Espey WKA3 For a larger view, please mouseover the image.
For a larger view, please mouseover the image.
Item Description
1 Flat seal
2 Housing half
3 Housing half
4 Seal ring
  • Cartridge seal
  • Standardized dimensions
  • Short axial installation length (8.4 mm)
  • Dry running
  • Seal ring bears 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
  • One-piece seal ring (initial delivery)
  • Easy installation
  • High reliability
  • Maintainability
  • Long-term operating time
  • Alternative to radial shaft seal ring
Shaft diameter:
d = 28 ... 80 mm (1.10" … 3.15")
Operating pressure: p = 1.075 bar (16 PSI) abs.
Operating temperature:
t = max. +200 °C (392 °F)
Sliding velocity:
vg = max. 40 m/s (131 ft/s)
Radial play: ±2.0 … 4.0 mm (±0.08" … 0.16")
Axial movement: theoretically unlimited
Seal ring: PTFE compound
Housing: 1.4301
Tension spring: 1.4571
  • Chemical industry
  • Food processing industry
  • Machinery and plant building
  • Pulp and paper industry
  • Metal production and processing
  • Small and medium-sized fans / blowers
  • Air regulating devices
  • Bearing seals
  • Clean gases*


* Not applicable for toxic, solids containing gases and exhaust gas