A removable seal assembly configured to engage an access device includes a body including a proximal portion, a distal portion, and a passageway extending longitudinally therethrough. The proximal portion defines an annular distally-oriented surface and the distal portion defines an annular proximally-oriented surface. The body is configured for positioning within an access device such that the annular distally-oriented surface and the annular proximally-oriented surface engage opposing surfaces of the access device therebetween. An O-ring disposed about the body between the annular distally-oriented surface and the annular proximally-oriented surface. The O-ring is configured to establish a fluid tight-seal between the body and the access device.