Abstract: A semi-cartridge seal is provided incorporating two components each comprising a plurality of preassembled parts. The first component includes an annular holder for snug but slidable positioning along a shaft and loosely supports an annular seal face structure therefrom with an O-ring seal forming a fluid tight seal between the seal face structure and the annular holder, centering the seal face structure relative to the annular holder and frictionally resisting rotation of the sell face structure relative to the annular holder, the latter being sealed relative to the associated shaft.

Abstract: A bearing protector is provided for forming a seal between a rotating shaft and a housing opening outwardly through which the shaft projects. The protector comprises a component consisting of a plurality of preassembled components and is constructed in a manner such that it may be pressed fitted into operative association with a rotating shaft and a corresponding housing portion independent of any flexure of the protector parts which deters the sealing ability thereof.

Abstract: A seal chamber housing is provided for equipment with rotating shafts and includes a stepped conical bore open at the pumping mechanism end. The bore defines a seal chamber affording greater volume about the associated mechanical seals and a tapered bushing is optionally sealingly seated in the large diameter end of the stepped conical bore for excluding pump fluid from the seal chamber and/or preventing loss of seal flush liquid from within the seal chamber. In addition, the seal chamber includes upper and lower vent and drain ports primarily for use when the optional bushing is in place and said chamber also includes flushing fluid ports, a closed temperature-controlling external fluid channel and external air cooling features, all of which coact in various operating environments to provide longer and more efficient mechanical seal life.

Abstract: A cartridge type assembly is provided for use in conjunction with a housing wall having an opening thereof through which a rotary shaft projects. The assembly includes an inner bearing race supporting sleeve which is axially removably slidable, sealed relative to and releasably anchored in axial position on the shaft. A floating annular outer bearing race supporting housing is disposed about the sleeve and bearing structure including inner and outer races is stationarily supported from the sleeve and housing, respectively against axial and angular displacement relative thereto. The sleeve includes first rotary axial face seal ring structure removably stationarily supported therefrom in sealed engagement therewith and the housing includes second stationary axial face seal ring structure removably stationarily supported therefrom and with which the first rotary axial face seal ring structure is rotatably slidably engaged.