RING BACKUP (Hyster HY18930)

HY18930: A damaged retaining ring can allow a shaft or bore component to shift position during operation. The RING BACKUP part type serves as a mechanical stop that holds an assembly in place against axial movement. This aftermarket replacement part references Hyster as the OE maker and cross-references part number HY18930. During normal service, a failed backup ring may cause a sudden loss of preload, leading to unintended disassembly of the connected parts. Keeping a retaining ring in sound condition helps maintain consistent clamping force under vibration or thermal cycling. The item ships at approximately 0.002 POUNDS. Verify the serial number or application, then call (562) 693-7748.

Part number variants: HY18930, hy18930