Magnetic seal assembly

Details Magnetic seal assembly Magnetic seal assembly

F - Mech Eng,Light,Heat,Weapons

16

J

277/16, 277/20

F16J 15/40 (2006.01) F16C 33/78 (2006.01) F16J 15/34 (2006.01)

Patent

CA 1319715

MAGNETIC SEAL ASSEMBLY ABSTRACT OF THE DISCLOSURE 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 sur- rounds 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.

576141

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