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Parker Wear Rings


Parker Wear Rings

ESP International offers a complete Parker line of wear ring products to fit any application. By incorporating premium material blends with precision machining tolerances (down to ±.001″), Parker meets the full spectrum of needs, from heavy-duty hydraulic cylinders operating under the highest temperatures and pressures to pneumatic applications requiring low friction, long-life and self-lubrication.

 

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WPT Cross Section
WRT Cross Section
PDT Cross Section
PDW Cross Section

 

 


 

WPT Profile, Tight-Tolerance Piston Wear Ring
WPT Cross Section

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WPT profile tight-tolerance piston wear rings are the premier bearings for light- to heavy-duty hydraulic applications. WPT profile wear rings are available in standard sizes from 1″ up to 12″ bore diameters (larger sizes upon request). WPT profile wear rings feature chamfered corners on the I.D. and are designed to snap closed during assembly to hold tight against the piston, eliminating bore interference and simplifying installation.

Technical Data

Standard Material: W4733 WearGard™

Radial Tolerance: +.000″/ -.002″ (up to 6″ O.D.); +.000/-.003″ (6″ to 12″ O.D.)

End Cuts: Butt Cut, Angle Cut (Skive Cut), Step Cut

End Cuts


 

WRT Profile, Tight-Tolerance Rod Wear Ring
WRT Cross Section

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WRT profile tight-tolerance rod wear rings, when combined with the WPT profile, complete the premier cylinder bearing system. Recommended for light- to heavy-duty hydraulic applications, they are available in standard sizes from 7/8″ up to 7″ rod diameters (larger sizes upon request). WRT profile wear rings feature chamfered corners on the O.D. and are designed to snap open during assembly to hold tight against the head gland, eliminating rod interference and simplifying installation.

Technical Data

Standard Material: W4733 WearGard™

Radial Tolerance: +.000″/-.002″ (up to 5-3/4″ I.D.); +.000/-.003″ (5-3/4″ to 7″ I.D.)

End Cuts: Butt Cut, Angle Cut (Skive Cut), Step Cut

End Cuts


 

PDT Profile, PTFE Wear Strip for Rod and Piston
PDT Cross Section

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PDT profile wear strip is available in a variety of PTFE blends and provides excellent low-friction performance in pneumatics and lightduty hydraulics. PDT profile wear strip is available in cut-to-length versions as well as bulk strip. Cut-to-length part numbers reduce prep time by providing precision end cuts and ready-to-install diameters. Bulk strip offers versatility and reduces part number inventory by providing universal sizing in one part number.

Technical Data

Standard Materials:

  • 0401 – 40% Bronze-Filled PTFE
  • 0307 – 23% Carbon, 2% Graphite-Filled PTFE

Radial Tolerance: +.000″/-.004″

End Cuts: Butt Cut, Angle Cut (Skive Cut), Step Cut

End Cuts


 

PDW Profile, Machined Wear Ring for Rod and Piston
PDW Cross Section

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PDW profile wear rings are precision machined PTFE bearings, lathe cut to exact size and shape. PDW profile wear rings offer precise fitting and easy installation. The wide range of available PTFE blends gives these machined wear rings versatility to accommodate any pneumatic or light-duty hydraulic application requiring low friction and high-temperature capabilities.

Technical Data

Standard Material

  • 0401 – 40% Bronze-Filled PTFE
  • 0307 – 23% Carbon, 2% Graphite-Filled PTFE

Alternate Materials (Composite Fabric-Reinforced Resins)

  • 0810 – Standard Polyester-based with PTFE
  • 0811 – Graphite-filled Polyester Based
  • 0812 – MoS2-filled Polyester Based
  • 0813 – PTFE-Filled Polyester Based

Radial Tolerance: +.000″/-.004″

End Cuts: Butt Cut, Angle Cut (Skive Cut), Step Cut

End Cuts

 

 


ESP – Parker “Seal Technology Center”

ESP International is proud to be one of the few premier distributors to qualify as a “Parker Seal Parker Distributor Seal Technology CenterTechnology Center (STC)”.

  • Proven Engineering Capability
  • ISO Quality Approval
  • Strong Financial Track Record

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