Abstract: A hydraulic flange for connecting a drive device to a fluid reservoir includes a first hydraulic port and a second hydraulic port, and the first hydraulic port includes a radially inwardly extending, circumferential wall forming a shoulder therein that divides the first hydraulic port into an axially outer portion having a first diameter and an axially inner portion having a second diameter. The axially outer portion is configured to receive a first annular seal element having a third diameter and the axially inner portion is configured to receive a second annular seal element having a fourth diameter.