The twelve Rmx250 1997 (v) General (e01) Rear Brake component parts are all listed in this schematic.
Parts such as the Rear Brake: Arm,brake Pedal, Washer, Shaft,brake Pedal, Seal,oil(15x21x3) are included in the Rmx250 1997 (v) General (e01) Rear Brake parts fiche.
On this parts fiche the Seal,oil(15x21x3) is the most specified component.