SEALING RING FOR MOTOR SHAFT STIHL CHAINSAW MODELS: 024 , 026 , 028 , 034 , 036 , 046 , 084 , BR 320 BR 340 , BR 380 , BR 400 , BR 420 , FS 360 , FS 420 FS 500 , FS 550 , GS 461 , MS 240 , MS 241 , MS 260 MS 261 , MS 340 , MS 341 , MS 360 , MS 361 , MS 362 MS 441 , MS 460 , MS 461 , SR 320 , SR 340 , SR 400 , SR 420 MEASUREMENTS: OUTER DIAMETER: 29. 6 mm INTERNAL DIAMETER: 15 mm WIDTH: 4 mm Part No.: 40271442 Original part No.: 9640 003 1600 MP