Slider Ring o-ring

This slider ring is just an o-ring, and a pair of them are used on the clutch release slider to seal it against the inside of the gearbox rear cover.

Designed to work with clutch release slider IMZ-8.104-03206-01, which has a groove wide enough to fit two of these o-rings.

This o-ring is also used in the gearbox, to seal the flexible coupler shaft to the secondary shaft, and on the front fork to seal the front brake bracket's bushings, and 

It replaces 72-03207-A.