I am in a search of new or used but in good condition seal/diaphragm for Nissin master cylinder, for front and rear brake.
I need it for Gen 1 bike, but it is the same also for Gen 2 bikes that use this type of master cylinders.
In the rear, the seal is ofcourse only in the reservoir, dislocated from the cylinder itself.

Front is sort of tri-oval shape and rear is rectangular.

Please let me know if you have it. Thanks.