Abstract: A packing case for cooling compressors and other machinery is disclosed. A packing case includes an opening through which a movable machinery shaft may be inserted such that the packing case is mounted on the shaft. In an exemplary embodiment, the packing case contains at least one packing cup with channels through which a fluid coolant may flow. The channels form substantially parallel passageways along the length of the shaft that are spaced apart around the shaft circumference and series connected. The fluid coolant may be introduced through one or more inlet ports, circulate through the substantially parallel passageways of the at least one packing cup, and exit the packing case through one or more outlet ports. The fluid coolant may flow through the packing case in a single, continuous flow path or a split flow arrangement.

Abstract: A packing case member or packing cup for use in a package of other similar cups for mounting on a reciprocally or rotatably movable machinery shaft to prevent gas leakage along the shaft is disclosed. The member includes a circular central opening for the shaft and provision for a conventional seal ring which slidably bears against the shaft as the shaft moves through the member. A fluid coolant passageway is formed in the member so as to extend around a majority peripheral portion of the central opening between inlet and outlet ports located at opposite end portions of the passageway. The passageway is characterized by at least three straight line segments which successively intersect one another at various angular positions around the central opening. Each straight line segment is accessible through a peripheral access opening which communicates with one end thereof for ease of cleaning debris clogging the passageway.