SEAL ASSEMBLY WITH ADJUSTABLE OUTSIDE DIAMETER

摘要

A seal assembly for sealing a space between a shaft and a housing includes a seal having a central axis, an inner annular sealing lip sealingly engageable with the shaft and an outer annular rim with an outer circumferential surfaces engageable with the housing inner surface. At least one and preferably two support members are disposed within the annular rim and at least one and preferably a plurality of adjustment devices are coupled with the support members. Each adjustment device is configured to displace at least a portion of each support member radially outwardly with respect to the central axis, to displace at least a portion of the rim generally toward the housing inner surface, and/or to displace at least a portion of each support member radially inwardly toward the central axis to permit displacement of at least a portion of the rim generally away from the housing inner surface.

主权项

1. A seal assembly for sealing a space between a shaft and a housing having an inner circumferential surface, the seal assembly comprising:
a seal having a central axis, an inner annular sealing lip sealingly engageable with the shaft and an outer annular rim with an outer circumferential surface engageable with the housing inner surface; at least one support member disposed within the annular rim; and at least one adjustment device coupled with the support member and configured to at least one of displace at least a portion of the support member radially outwardly with respect to the central axis to displace at least a portion of the rim generally toward the housing inner surface and displace at least a portion of the support member radially inwardly toward the central axis to permit displacement of at least a portion of the rim generally away from the housing inner surface; wherein the seal rim has an inner circumferential surface extending about the central axis, the at least one support member includes first and second support members, each one of the support members including a generally annular body generally centered about the central axis and engageable with the rim inner surface, the two support member bodies being spaced axially apart, and the at least one adjustment device is connected with a separate portion of each one of the first and second annular support member bodies and is configured to displace the connected first and second member body portions generally axially such that the connected body portions displace generally radially with respect to the central axis.