In this schematic the "Gasket(6.2x11x1).2 (nas)" is used most often.
The most reasonably priced component used on the T305 Tc305 1969 Usa (e03) Oil Pump - Oil Hose is the Gasket,oil Pump Gear Case (mca).
Parts such as the Oil Pump - Oil Hose: Union Bolt, Gasket,oil Pump Gear Case (mca), Screw, Gasket(6.2x11x1).2 (nas) are included in the T305 Tc305 1969 Usa (e03) Oil Pump - Oil Hose parts fiche.
