O-RING (Yale YT218-S-312)

YT218-S-312: A damaged retaining ring can allow assembled components to separate during operation, leading to mechanical failure or loss of function. This aftermarket replacement part references Yale catalog number YT218-S-312. The O-ring functions as a sealing element that prevents fluid or gas leakage between mating surfaces. A worn or missing O-ring may cause gradual pressure loss or contamination ingress in a sealed joint. During disassembly, an O-ring that appears cracked or flattened should be replaced to maintain a reliable seal. Verify the serial number or application, then call (562) 693-7748.

Part number variants: YT218-S-312, yt218-s-312, YT218S312, yt218s312