This O-ring fits the screw that secures the cap on MS1.0 and MS2.0 aluminum gear differential cases, forming a seal to reduce oil seepage around the cap fastener on RC differentials. It is supplied as a pack of 10 pieces for regular replacement during maintenance.
Made for hobbyists who rebuild gear differentials, this part helps maintain internal oil levels and reseal the case after teardown and reassembly. Fit it as a scheduled wear item when inspecting the differential or replacing bearings and spur components.
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