| 摘要 |
PURPOSE:To maintain high air-tightness for a long period of time by forming a magnetic field between first and second members to dispose a seal body having fluidity and magnetism in the magnetic field. CONSTITUTION:A seal device 10 maintains air-tightness between filter frame bodies 12 corresponding to first and second members and a support frame body 14. A filter pack 16 is disposed in the filter frame body 12 and the support frame body 14 is suspended from a ceiling by a support rod 18. The seal device 10 forms a magnetic field between the filter frame body 12 and support frame body 14. A magnetic means 20 is a permanent magnet for example. On the other hand, the seal body 22 selected is magnetic fluid having magnetism and fluidity. Thus, the seal body 22 is difficult to destroy without flowing to the outside in spite of the fluidity. |
