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MoreTec MoreTec Co., Ltd - www.moretec-inc.com
- Dai2 Amemiya Bldg. 8F, 23-5,Higashi-Ueno 6Chome, TaiTou-Ku, Tokyo 110-0015, Japan

email, Tel. +81 03-6231-7890

Development, production, sales for vacuum feedthroughs and magnetic fluid
products: Magnetic Fluid Feedthrough

Under the condition of shaft rotation, a magnetic fluid feedthrough provides a hermetic seal against both vacuum and gas.
A magnetic loop consists of the magnet, poles and the shaft. Several stages of liquid "O-ring" are formed by the gathering of the magnetic fluid between the poles and the shaft in the presence of magnetic field. Each stage can sustain a pressure of 0.2kgf/cm2. There are normally 10 to 20 stages in the sealing part of the feedthrough.
Taking advantage of the superparamagnetic and liquid properties of magnetic fluid, there is no mechanical wear, even at very high rotary speed of the shaft. The magnetic fluid feedthrough is an Ultimate Sealing Component with a long life time.






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