Abstract: Spacers for use with actuator casings are disclosed. An example spacer includes a ring-shaped member defining a central opening and configured to form a part of an actuator casing and to space first and second actuator casing portions a predetermined distance when the first and second casing portions are coupled to the ring-shaped member. The ring-shaped member includes a first surface surrounding the central opening configured to engage the first casing portion and a second surface surrounding the central opening configured to engage the second casing portion. Each of the first and second surfaces includes a plurality of apertures configured to receive threaded fasteners to attach the first and second actuator casing portions to the ring-shaped member.