Seal assembly with seal unit
AssigneeTrelleborg Sealing Solutions Germany GmbH
InventorsAlexander Walz, Jan Kolodziej
Life of this patent
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Abstract
A sealing arrangement includes a housing, a shaft and a sealing unit. The sealing unit includes a sealing ring having a retaining section and having a sealing lip which extends outwardly from the retaining section in a direction radial to the central axis of the sealing unit and which dynamically sealingly rests against a sealing surface of a housing of the sealing arrangement. The sealing unit includes an internally tensioning clamping ring which is arranged embedded in the material of the sealing ring and secures the axial position of the retaining section in the retaining groove and ensures that the retaining section is circumferentially pretensioned and statically sealingly rests against the shaft.
Claims18
A sealing arrangement, comprising:
- a housing and a shaft which is mounted in the housing wherein it can be rotated about an axis of rotation;
- and
- a sealing unit configured for sealing a sealing gap formed between the housing and the shaft with respect to an outside of the housing;
- wherein the sealing unit comprises:
- a sealing ring having a retaining section and having a sealing lip which extends outwardly away from the retaining section in a radial direction and which dynamically sealingly rests against a sealing surface of the housing in an axial direction;
- and
- an internally tensioning clamping ring which is arranged embedded in the material of the sealing ring and secures the axial position of the retaining section in a retaining groove and which as well ensures that the retaining section is circumferentially pretensioned and statically sealingly rests against the shaft;
- wherein the retaining section of the sealing ring has on an inner circumferential side a circumferential sealing flange which engages in the retaining groove;
- wherein the clamping ring engages in the retaining groove at least in sections in a radial direction.
A sealing arrangement, comprising:
- a housing and a shaft which is mounted in the housing wherein it can be rotated about an axis of rotation;
- and
- a sealing unit configured for sealing a sealing gap formed between the housing and the shaft with respect to an outside of the housing;
- wherein the sealing unit comprises:
- a sealing ring having a retaining section and having a sealing lip which extends outwardly away from the retaining section in a radial direction and which dynamically sealingly rests against a sealing surface of the housing in an axial direction;
- and
- an internally tensioning clamping ring which is arranged embedded in the material of the sealing ring and secures the axial position of the retaining section in a retaining groove and which as well ensures that the retaining section is circumferentially pretensioned and statically sealingly rests against the shaft;
- wherein the retaining section of the sealing ring has on an inner circumferential side a circumferential sealing flange which engages in the retaining groove;
- wherein the clamping ring has a plurality of tool engagements which are accessible from the outside.
A sealing arrangement, comprising:
- a housing and a shaft which is mounted in the housing wherein it can be rotated about an axis of rotation;
- and
- a sealing unit configured for sealing a sealing gap formed between the housing and the shaft with respect to an outside of the housing;
- wherein the sealing unit comprises:
- a sealing ring having a retaining section and having a sealing lip which extends outwardly away from the retaining section in a radial direction and which dynamically sealingly rests against a sealing surface of the housing in an axial direction;
- and
- an internally tensioning clamping ring which is arranged embedded in the material of the sealing ring and secures the axial position of the retaining section in a retaining groove and which as well ensures that the retaining section is circumferentially pretensioned and statically sealingly rests against the shaft;
- wherein the retaining section of the sealing ring has on an inner circumferential side a circumferential sealing flange which engages in the retaining groove;
- wherein the clamping ring has first and second ring segments which are arranged alternately one behind the other in a circumferential direction, the first ring segments being less elastically deformable than the second ring segments, and the first ring segments being flexibly connected to one another via the second ring segments.
Dependencies are inferred from the claim text.