Check out any of the fourteen Gasket Kit A components enlisted.
Parts such as the Gasket Kit A: Gasket,cylinder H (nas), Gasket,plug Hole (nas), Rubber,mount, Gasket,thermo Cas are included in the Cb600fa3 Hornet 2010 (a) France / Abs Cmf St Gasket Kit A parts fiche.
On this parts fiche the Washer,sealing,6. is the most specified component.