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WR® 650: Superior Dry Run Capability

WR® 650 is a next-generation PFA composite reinforced with a three-dimensional carbon-fiber architecture. This material offers superior dry run capability, excellent wear and chemical resistance, and an operating temperature range up to 260°C (500°F). The advanced mechanical, thermal, and tribological properties of WR® 650 provide increased operating efficiency and improved MTBR (mean time between repair). WR® 650’s non-galling/non-seizing characteristics, and its ability to dampen vibrations, allow for tighter clearances compared to traditional metallic components, and increased efficiency. The malleable nature of PFA ensures metallic counter-parts are preserved, even those that are relatively soft (SS 304 or 316). This helps extend the service life of pumps and improves equipment reliability. WR® 650 is available in a broad range of stock shapes, providing customers the ability to machine parts to their exact specifications.

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  • Superior dry run properties to increase MTBR. Due to its three-dimensional carbon fiber reinforcements, WR® 650 can handle 2.5x higher dry wear conditions compared to other PFA composites.
  • Value engineered to deliver a low total cost of ownership vs. competitive products.
  • Enhanced vibration dampening capability extends reliability and the lifetime of the pump.



  • Pump applications in refineries, chemical plants, power plants, and water treatment plants.
  • Centrifugal pumps (overhung, vertical in-line, single-stage between bearings, multi-stage horizontal, vertical, etc.).



1. Reference GT Stock/Solid Code: 8023.
2. Coefficient of Thermal Expansion values are approximated based on internal testing methods.
Radial values are the average of ID and OD measurements from D/t= 8, 16, and 32 tubes.