Seal Kit, Pfeiffer DUO 250A

PSK027
GBP 302.00
Used on Pfeiffer DUO 250A,UNO 250A

For complete kit content details see bill of materials below

Part number alternatives: PKE00016-T
Part Number Description Quantity Qty in stock
02106062 O-ring, 107.32 x 5.33mm - Viton, Part# 02106062 4 0
320538 O-ring, 85 X 5mm - Viton, Part# 320538 1 3
4070621 O-ring, 38 x 3.0mm - Viton, Part# 4070621 4 4
4070420 O-ring, 24 x 2.5mm - Viton, Part# 4070420 5 9
PL23970504 O-ring, 55 x 5 mm - Viton, Part# PL23970504 2 1
4070333 O-ring, 19 x 2.5 mm - Viton, Part# 4070333 2 4
380050 Ring Seat, Valve, Pfeiffer, DUO, UNO, DUO250A, UNO250A, Part# 380050 1 6
300215 Case Gasket, Cork - Pfeiffer UNO/DUO 250A - Part# 300215 1 3
300214 Gasket, ring, Pfeiffer, DUO, UNO, DUO250A, DUO255M(IndexC), UNO250A, Part# 300214 2 15
38250019 Dowty Seal, 12. 7 X 18 X 1. 5mm, Pfeiffer, DUO, UNO, Part# 38250019 1 11
320525 O-ring, 35x 5 mm - Viton, Part# 320525 2 21
48655900 O-ring, 44 x 3 mm - Viton, Part# 48655900 1 28
4070542 O-ring, 32 x 3mm - Viton, Part# 4070542 2 0
PL23970129 O-Ring,Viton,65 X 5 MM Part# PL23970129 2 3
48656700 O-ring, 140 x 5 mm - Viton, Part# 48656700 1 55
PL23970419 O-ring, 125 x 5 mm - Viton, Part# PL23970419 3 10
310152 Seal, Shaft, Single Lip, Pfeiffer, DUO, UNO, Part# 310152 2 12
4070088 O-ring, 6 x 2.2 mm - Viton, Part# 4070088 7 0
4070259 O-ring, 15 x 2.5 mm - Viton, Part# 4070259 3 5

General product classifications

Part Number Cross-Reference PKE00016-T
Compatible Brands Pfeiffer
Family DUO
Compatible Pump Models DUO250A
UNO250A
Category Repair Kit
Subcategory Seal / Gasket Kit
Country of origin US

Oil Sealed, Two Stage Rotary Vane Pumps

  • DUO 120A – standard version
  • DUO 125 (Index B) – standard version
  • DUO 125M – magnetic coupling
  • UNO/DUO 250A – standard version
  • DUO 255M (Index C)  – magnetic coupling

* MC version – Corrosive gas application (with magnetic coupling)

Oil Change:

The maintenance schedule of operating fluid depends on application and location of pump. The oil must be changed if:

  • Ultimate pressure is no longer attainable
  • Oil appears contaminated, milky, or cloudy when viewed through sight glass
  • Oil is discolored

Oil Capacity:

  • DUO 120 - 13 liter
  • DUO 125 - 14 liter
  • UNO 250 - 30 liter
  • DUO 250 - 23 liter
  • DUO 255 - 25 liter

Maintenance Intervals:

Daily:

  • Check operating fluid levels
  • Check for leaks

As required (at least annually):

  • Change operating fluid
  • Disassemble casing, sight glass and pumping system and clean casing outside (without cleaning agent)
  • Clean gas ballast valve & silencer
  • Clean motor fan cap

As required (at least every 2 years):

  • Disassemble the pump, clean & exchange seal and wearing parts

As required (at least every 4 years):

  • Carry out work in accordance with maintenance and additionally
    • Change vanes
    • Change valves, springs, and sight glass
    • Change silencer nozzle
    • Check coupling and exchange is necessary