| 摘要 |
A sealing device (20, 80, 90), optionally in the form of a kit is provided for sealing about a rotatable member such as a shaft (22). The sealing device or the kit includes a follower housing (32) for mounting about the rotatable member (32) with an axial direction of the follower housing aligned with the rotational axis of the rotating member. Further, a follower (40, 40a, 40b) is provided for compressing a primary seal, such as packing (28), for sealing against the rotatable member. The follower is slidable within the follower housing generally in the axial direction and has sliding interfaces for interfacing with the follower housing and/or the rotatable member. There is also a chamber (68, 108) or simply a recess defined by the housing and a pressure face of the follower, with the chamber/recess being configured to receive fluid. A secondary seal (58) is also provided at the sliding interfaces for sealing against the egress of fluid in use, from the chamber/recess along the sliding interfaces of the follower.
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