| 摘要 |
A shaft seal comprises a rigid case ring (1) and a sealing ring which has a PTFE or like ring component (4) secured in the case ring by a moulded elastomeric ring component (5) moulded into and face-bonded to the case ring, to secure the PTFE ring component in place, and having elastomeric material (7) extending over a face of the PTFE ring component, towards a sealing periphery thereof; optionally, the elastomeric material is moulded into a hydrodynamic, positive sealing, configuration of ribs or grooves (8). |
