O-RING (Yale YT218-S-313)

A worn O-ring can allow fluid leakage, reducing system pressure and causing erratic operation. This aftermarket replacement part references Yale as the OE maker and cross-references part number YT218-S-313. The O-ring functions as a static seal between mating surfaces, preventing fluid bypass under pressure. A common failure symptom is visible seepage at the joint, which can lead to gradual performance loss if unaddressed. Keeping a sealing component in sound condition helps maintain consistent pressure in the sealed circuit. Verify the serial number or application, then call (562) 693-7748. This part is listed under the Retaining Ring category in the catalog.

Part number variants: YT218-S-313, yt218-s-313, YT218S313, yt218s313