In this schematic the "Washer,sealing,6." is used most often.
Parts such as the Gasket Kit: Washer Sealing 6mm, Rubber,silencer C, O-ring,20mm, Gasket,r Cover (nas) are included in the Cr125r 2001 (1) Canada / Cmf Gasket Kit parts fiche.
The lowest price component in this Gasket Kit parts-list fiche is the Washer,plug,drain 12.