| 摘要 |
A hydraulically balanced face type shaft seal is provided in which the opening and closing seal face areas retain concentricity with each other in the event of lateral shaft displacement. All of the areas affected by the hydraulic force balance are embodied either by the rotating or stationary seal member, and the radial width of the sealing face of a second seal member is sufficiently wider than that of the first member so as to preclude runoff at maximum lateral displacement of the shaft at the seal. |
