| 摘要 |
MAGNETIC SEAL ASSEMBLY A magnetic-type end face seal assembly for creating an airtight seal between a housing and a rotatable shaft which projects outwardly through a housing bore. An insert ring of magnetically attractable material surrounds the shaft within the bore, and has a seating ring of hard synthetic material externally fixed thereto and sealingly engaged with the wall of the housing bore. The insert ring defines a first annular seal face on the outer axial end thereof. A rotating ring arrangement encircles and is nonrotatably coupled to the shaft axially adjacent the insert ring. This rotating ring arrangement includes a ring-shaped magnet which is disposed closely axially adjacent but slightly spaced from the insert ring, and this magnet mounts thereon a face ring which defines a second annular seal face which is maintained in engagement with the first seal face due to the magnetic attraction between the magnet and the insert ring. |
