Piston Wear Ring 7H2423

The 7H2423 piston wear ring is used in hydraulic cylinder assemblies installed on Caterpillar track-type tractors, pipelayers, wheel tractor-scrapers, motor graders, and track-type loaders. It is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The ring is fitted during hydraulic cylinder service. Its function is to guide the hydraulic piston or rod and maintain clearance between the moving component and the cylinder surface.

Fitment

The part is listed for the following Caterpillar equipment models and machine series:

• Track-type tractors: 140, 143, 4, 4A, D4D, D4E, D4E SR, D5, D5B, D5E.
• Pipelayers: 561B, 561C, 561D.
• Wheel tractor-scrapers: 633, 633B.
• Motor graders: 120G, 120K, 120K 2, 12K, 130G, 140K, 140K ES, 140H, 160G, 140K 2, 160H, 160H ES, 160H NA, 160K, 163H, 163H ES, 163H NA.
• Track-type loaders: 941, 941B, 951B, 951C, 955C, 955H, 955K, 955L, 977D.

Model compatibility depends on the hydraulic cylinder configuration and the required seal or wear-ring dimensions. The part number and dimensions should be checked against the component being serviced before installation.

Cross-reference numbers

Specifications

The 7H2423 ring is a hydraulic-cylinder service component. Its stated dimensions are an inside diameter of 2 inches and a thickness of 0.13 inches; the listed overall package measurements are 5.5 cm in length, 5.5 cm in width, and 2.1 cm in depth.