Thermoplastic Composite

WR®300 is a carbon-fiber reinforced compression molded PEEKoften selected by pump manufacturers and users for pump bushings and case or impeller wear rings. Maximum service life is achieved in clean, lubricated and/or moist environments.

WR300 allows the pump user to increase pump efficiency by running tighter wear ring clearances while decreasing potential pump damage when pumps are cavitated or experience radial bearing failures.




  • Excellent chemical resistance
  • Nongalling/nonseizing properties
  • Low coefficient of friction
  • Impact resistance
  • Thermal shock resistance


Greene, Tweed’s CPI/MRO group maintains common wear ring and bushing billet sizes in inventory. Outer billet diameters range from 1 in. to 33 in. (2.5 cm to 84 cm), and lengths of up to 8 in. (20cm) are possible.


WR300 should not be used in abrasive medias or in press-in applications above 275°F (135°C)

Typical Properties

WR300 Typical Properties Table

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