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 Profile, Tight-Tolerance Piston Wear Ring

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 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 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 Material:

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 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: