Some items from this specific schematic: O-ring 18x3, Gasket,water Pump, O-ring,p7, O-ring,22x2.
The most reasonably priced component used on the Xr650r 2000 (y) European Direct Sales Gasket Kit B is the Washer Seal, 6mm.
The Gasket Kit B assembly is constructed from several parts from which the Gskt.sheet Kit,b (nas) is the most expensive.