SEALING RING FOR STIHL MOTORWHEEL DRIVE SHAFT MODELS: 009 - 010 - 011 012 - 044 - MS440 MEASUREMENTS: OUTER DIAMETER: 19 mm INTERNAL DIAMETER: 13 mm WIDTH: 4 mm CODE: 40272218 ORIGINAL CODE: 9640 003 1320 - 9633 003 1320 MP