| 摘要 |
PURPOSE:To make a magnetic fluid sealing device proof against high pressure, make it compact, make loss torque lower, and make burst amount small. CONSTITUTION:In a magnetic fluid sealing device having ring-like projections 6 and 60 for holding magnetic fluid 5, at least one condition is satisfied out of such conditions that the axial width it of the ring-like projections 6 and 60 must be between 0.13mm and 0.24mm, the radial height 1h of the ring-like projections 6 and 60 must be between 0.28mm and 0.47mm, and the axial interval Is between side faces of the ring-like projections 6 and 60, which are adjacent to each other. |
