Machine Design

Pump Bushings And Case Rings

Graphalloy, a self-lubricating and nongalling graphite/metal alloy, is used for pump bushing and case rings.

The parts let pumps survive repeated "run-dry" conditions, slow-roll operation, and frequent stop/starts. The bearing material has a wide temperature range for pump applications from cryogenic to 1,000°F. Graphalloy-fitted pumps have less vibration for closer fits, as well as survive upsets, loss of suction, and other transient conditions.

Graphite Metallizing, 1050 Nepperhan Ave., Yonkers, NY 10703, (914) 968-8400,

Hide comments


  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.