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| Number | Title | Issue Date |
| 7303179 | Split packing follower for use with valves Split packing followers for use with valves are disclosed. A disclosed packing follower includes a first member having a first portion of a flange and a first portion of a curved wall extending substantially perpendiculary from the first portion of the flange to def... | 12/04/2007 |
| 6325387 | Packing gland assembly A packing gland assembly mountable on a shaft extending through an opening in a wall member of an apparatus consisting of a main housing member mountable on the shaft having an opening for receiving the shaft therethrough, the opening being provided with ... | 12/04/2001 |
| 5820129 | Mechanical split double seals Split mechanical seal assemblies which include a pressurized fluid barrier and multiple concentric and axially aligned stationary seal rings. The stationary seal rings are in sealing relation with a rotary seal ring at their respective seal faces, and wit... | 10/13/1998 |
| 4623152 | Shaft seal arrangement with split housing An improvement for a stuffing box for sealing a shaft, such as a valve stem, in a first housing, such as a valve body, where the shaft extends through the housing and original seal devices are provided in an annular chamber or packing gland between the ho... | 11/18/1986 |
