| 摘要 |
A stem seal having first and second wiping members (30, 32) circumjacent a stem is disposed within a bore. A lubricant-bearing ring (40) is disposed about the stem within the bore between the wiping members, under compression therefrom. Projections from the wiping members intrude into the lubrication ring so as to depress the central surface areas thereof. Similar projections are used to center a coil spring (28) against one of these seal members and against an additional seal member (26). By forming the lubricant ring of open-cell foam or mesh construction, superior lubricant bearing capacities may be achieved. |
