Seal between rotating concentric elements

In a sealing arrangement for two concentrically arranged machine elements that are rotatable with respect to one another, comprised of a holding ring having circumferentially distributed spring fingers on its end that are positioned to snap into an annular groove in the surface of a bore in the outer ring upon the application of axially inward pressure to the holding ring;

• the improvement wherein the holding ring includes said spring fingers on its axially outwardly directed end and a centering portion on its axially inwardly directed end, said centering portion supporting said spring fingers and being radially supported in said bore of the outer ring adjacent said annular groove, and wherein a seal has an axially clamped mounting section clamped with compression between the centering portion and a radially extending inner shoulder of the outer ring adjacent the bore of the outer ring, the radially supported fit between said bore and said centering portion positioning said seal concentrically with the rotating axis of said machine elements, the mounting section of the seal having an axial supporting end surface with at least one recess formed therein abutting the shoulder of the outer ring.

In a sealing arrangement for two concentrically arranged machine elements that are rotatable with respect to one another, comprised of a holding ring having circumferentially distributed spring fingers on its end that are positioned to snap into a annular groove on the outer surface of an inner ring upon the application of axially inward pressure to said holding ring;

• the improvement wherein said holding ring includes said spring fingers on its axially outwardly directed end and a centering portion on its axially inwardly directed end, said centering portion supporting said spring fingers and being radially supported on the outer surface of the inner ring adjacent said annular groove, and wherein a seal has an axially clamped mounting section clamped with compression between said centering portion and a radially extending inner shoulder of said inner ring adjacent said outer surface of said inner ring, the radially supported fit between said outer surface and said centering portion positioning said seal concentrically with the rotating axis of said machine elements.

In a sealing arrangement for two concentrically arranged machine elements that are rotatable with respect to one another, comprised of a holding ring having circumferentially distributed spring fingers on its end that are positioned to snap into an annular groove on the outer surface of an inner ring upon the application of axially inward pressure to said holding ring;

• the improvement wherein said holding ring includes said spring fingers on its axially outwardly directed end and a centering portion on its axially inwardly directed end, said centering portion supporting said spring fingers and being radially supported on the outer surface of the inner ring adjacent said annular groove, and wherein a seal has an axially clamped mounting section clamped with compression between said centering portion and a radially extending inner shoulder of said inner ring adjacent said outer surface of said inner ring, the radially supported fit between said outer surface and said centering portion positioning said seal concentrically with the rotating axis of said machine elements, wherein said mounting section of the seal has an axial supporting end surface with at least one recess formed therein abutting said shoulder of said inner ring.