This O-ring fits on the screw that secures the cap of MS1.0 and MS2.0 aluminum gear differential cases, serving as a seal to limit oil seepage around the cap fastener on RC-scale differentials. It is supplied as a pack of 10 pcs for routine replacement during maintenance.
Designed for hobbyists who service gear differentials, the part assists with preserving internal oil levels and sealing the case after teardown and reassembly. Use it as a scheduled wear item when inspecting the differential or replacing bearings and spur assemblies.
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