Abstract: A compressor motor housing includes an aft region having a radially inner surface defining an inner diameter and a radially outer surface defining an outer diameter. Also included is an O-ring groove extending around at least a portion of the aft region within the radially outer surface, the O-ring groove. The O-ring groove includes a groove width, a groove depth and a groove diameter, wherein a width ratio defined by the groove width in relation to the groove diameter ranges from about 0.0257 to about 0.0272. The O-ring groove also includes an axially forward face, an axially aft face and a circumferential face disposed radially outwardly from the radially inner surface. The compressor motor housing further includes an O-ring seal simultaneously disposed in contact with the axially forward face, the axially aft face and the circumferential face.

Abstract: A compressor inlet housing includes an aft region having a radially inner surface defining an inner diameter and a radially outer surface defining an outer diameter. Also included is an O-ring groove extending around at least a portion of the aft region within the radially outer surface, the O-ring groove including a groove width, a groove depth and a groove diameter. The O-ring groove also includes an axially forward face, an axially aft face and a circumferential face disposed radially outwardly from the radially inner surface. The compressor inlet housing further includes an O-ring seal simultaneously disposed in contact with the axially forward face, the axially aft face and the circumferential face.