| 摘要 |
PURPOSE:To facilitate the assemblage of a seal and prevent the seal from deformation due to swelling and disturbance, by pressing fixedly a magnetic liquid impregnated member along the outer wall of a magnet member with a righting moment of an outer peripheral annular elastic body due to elastic deformation. CONSTITUTION:When an annular elastic body 16 is attached by elastic deformation, a magnetic fluid impregnated member 15 is pressed against the outer peripheral wall of a magnet member 12 to be firmly fixed thereto. Then, an annular elastic body 16 is expanded and fitted after the insertion of said member 15 to simplify extremely the assemblage. When magnetic fluid is filled between the outer peripheral wall of the magnet member 12 and the annular elastic member 16, the magnetic fluid leaches into and remains in a space formed by the magnetic fluid impregnated member 15. Namely, said member 15 serves to hold the magnetic fluid. |
