| 摘要 |
A shaft seal assembly includes a metal case having a wall extending cylindrically about a central axis with an annular leg extending radially inwardly from the wall toward the central axis. An elastomeric material is bonded to the leg, and a PTFE seal element is attached to the elastomeric material at a bond joint. The bond joint is spaced radially inwardly from the leg and in radial alignment with the leg and inhibits the elastomeric material from flexing. As such, the elastomeric material is isolated or substantially isolated from impacting the performance of the PTFE seal element during use. Accordingly, the bond joint provides a reliable seal of the PTFE seal element against a running surface of a shaft or wear sleeve.
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