495-201 Stens Oil Seals compatible with Stihl 9640-003-1560

495-201 Stens Oil Seals compatible with Stihl 9640-003-1560.  Height 0.170", ID 0.550", OD 0.870".  Not compatible with greather than 10% ethanol fuel.  No original manufacturer’s packaging is available.  Fits Stihl 066, MS 261, MS 341, MS 361, MS 362, MS 441, MS 650, MS 660 and MS 661 chainsaws; TS 410 Cutquik saws