Vespel Case Studies

Combatting Run-Dry Failure in Industrial Washing Pumps

DuPont™ Vespel® CR-6100 line-shaft bearing parts prove they can survive and maintain operation of a vertical pump during frequent run-dry events.

A Layne & Bowler 3-stage vertical pump is used to wash out bulk railcars before loading them with polyethylene and polypropylene at a resin plant in La Porte, Texas, U.S.A.. The process fluid is water and washing debris. Process temperature is ambient. More

Pump’s HF-Resistant Backup Bearings Help Combat Process Leaks

DuPont™ Vespel® CR-6100 parts withstand anhydrous hydrogen fluoride (HF) and resist wear in five years of service as backup shaft bearings in a centrifugal pump

A Chempump NC series canned motor pump is used to load anhydrous HF acid into tank cars at a DuPont plant in Texas. The pump is equipped with backup shaft bearings made of Vespel® CR-6100. The pump’s primary shaft bearings are made of silicon carbide. The process fluid provides bearing lubrication. Process temperature is ambient. More

When Hot Well Pumps Run Dry, Vespel® CR-6100 Keeps Them Running

Switching to DuPont™ Vespel® CR-6100 parts for line shaft bearings and stationary wear rings helped eliminate seizure failures in condensate return pumps at a California oil refinery.

About three times a year, run-dry conditions were causing failure of line shaft bearings or stationary wear rings in two vertical pumps for hot well condensate (water) at a major oil refinery. Seizing was the most common failure mode. Process temperature is 180° F (82°C). More

Vespel® CR Grade Materials Deliver Chemical- and Creep-Resistant Parts

Vespel® CR grade pump case wear rings, throat bushings and impellers improve refinery oil and gas pump efficiency.

Vespel® CR grade pump case wear rings, throat bushings and impellers improve refinery oil and gas pump efficiency. More