The component with the lowest price in the GASKET KIT A schematic is the Washer,sealing 6m.
In this schematic the "Washer,sealing,6." is used most often.
Parts such as the Gasket Kit A: Seal B,water Pipe, Gasket,ex.pipe (nas), Gasket Kit,a (nas), Rubber,mount are included in the Cb1000r 2011 (b) England / Mph Gasket Kit A parts fiche.