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Dupont Vespel CR-6100 pump shaft bushings

Upgrade your condensate pump shaft bushings to Vespel® CR-6100.

The First Pump Upgraded to Vespel® CR-6100

In the fall of 1997, a refinery in California decided to try Vespel® CR-6100 in a pair of condensate return pumps which were causing headaches.


  • For more than 20 years, the plant suffered chronic failures with a pair of condensate-return pumps
  • Most common failure mode was seizing
  • Other materials including nickel-impregnated graphite, and PEEK-based polymers had failed quickly when the pump ran dry

What they did

  • Upgraded shaft bearings and stationary wear rings to Vespel® CR-6100


  • After 9 years of service, no seizures
  • After 3 years of service, one pump was removed for inspection and showed “as-installed” clearances on the shaft bushings and wear rings
  • Pump life dramatically improved

Additional DuPont™ Vespel® CR-6100

Dupont™ Vespel® CR-6100 Standard Stock Size
Dupont™ Vespel® Machined Parts
Vespel® CR-6100 Applications
Problems Vespel® CR-6100 Solves /Case Studies
Industries Vespel® CR-6100 Serves
Vespel® CR-6100 Resources

Contact Boulden to see how Vespel® CR-6100 can help solve your Condensate Pump Failure 

If your condensate pumps are not performing as reliably as you would like, contact Boulden today to discuss whether Vespel® CR-6100 can help make your pumps more reliable. And sign up for our Newsletter for more Vespel® CR-6100 news!