RING - BACK UP (Hyster HY19819)

HY19819: A worn back-up ring can allow seal extrusion under pressure, leading to fluid bypass and reduced system efficiency. The Hyster catalog reference for this aftermarket replacement part is HY19819. This retaining ring type provides a mechanical barrier that supports the primary seal in a groove. A common failure consequence is gradual leakage past the seal, which may cause erratic operation over time. Keeping the back-up ring in sound condition helps maintain consistent sealing force in the assembly. The item ships at approximately 0.004 pounds. Verify the serial number or application, then call (562) 693-7748.

Part number variants: HY19819, hy19819