Magnetic Fluid Seals
Magnetic fluid seals are sealing devices in which magnetic fluids are used as the sealing material. Magnetic fluids have the characteristic of being drawn to a magnet.
As opposed to conventional oil seals or mechanical seals, magnetic fluid seals are clean seals that utilize magnetism to hold a magnetic fluid around a rotating shaft to form a fluid O-ring.
Magnetic fluid seals are used as dust seals for hard disk drives, in which a clean environment is required, and as vacuum seals for semiconductor manufacturing equipment and liquid display manufacturing equipment.
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