07001-02011 Back-Up Ring Fits Komatsu Models

One New Aftermarket Replacement Back-Up Ring for Komatsu Construction Equipment

This back-up ring is a Komatsu hydraulic sealing component used in hydraulic cylinder assemblies across a wide range of Komatsu construction equipment. Back-up rings are installed alongside O-rings to prevent seal extrusion under high-pressure hydraulic conditions, maintaining cylinder integrity and preventing fluid leaks during operation. The 07001-series designation identifies this as a Komatsu Engineering Standard (KES) part -- a standardized seal used across multiple Komatsu machine families including excavators, wheel loaders, bulldozers, and forklifts.

When replacing hydraulic cylinder seals or rebuilding a Komatsu hydraulic cylinder, verify the correct back-up ring size against your machine's service manual or cylinder seal kit list to ensure proper fitment.

Compatible Models

Komatsu: This is a Komatsu KES standardized hydraulic seal component used across multiple Komatsu excavator, dozer, wheel loader, forklift, and construction equipment models. Confirm fitment using your machine model and serial number against your Komatsu service manual or hydraulic cylinder seal kit listing.

Replaces Part Number(s):

07001-02011

New aftermarket replacement part - not remanufactured, not used.