About Magnetic Fluid Feedthrough - Moretec Inc

Magnetic fluid consists of sub-micron particles of Fe3O4 (other paramagnetic metallic oxides), surfactant and carrier liquid, etc. The surface of the particle is coated with surfactant, so that the magnetic particle is able to be dispersed stably in the liquid. Thus, it becomes a liquid of stable suspensibility. Because the liquid contains super-paramagnetic particles, it acts magnetically as a whole though it is a liquid.

Ever since the magnetic fluid was developed in NASA Apollo program in 1965, many countries have proposed and developed its applications. Now people make good use of the special features of magnetic fluid and apply them in vacuum sealing, speakers, magnetic domain detection, hydraulic pressure bearing lubrication, stepping motor damper and dust sealing of motor and robot, etc .