Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1993-12-16
1996-11-05
Cummings, Scott
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277815, 277 84, 277 85, 2771675, F16J 1538
Patent
active
055712681
ABSTRACT:
A split mechanical seal including first and second seal ring assemblies, at least one resilient biasing element and at least one axial biasing element. The first and second seal ring assemblies each include a seal ring having two segments that are resiliently supported in the seal. The segments have an outer surface and a pair of segment sealing faces disposed at opposite ends of the segments. The mechanical seal includes a pair of resilient biasing elements disposed about each seal ring, and the resilient biasing element is preferably an elastomeric member. The axial biasing element is associated with at least one seal ring for generating and applying, in cooperation with the elastomeric member, a second radially inward force; the second force operating to bias the segment sealing faces together when the mechanical seal is exposed to a selected pressure condition. The axial biasing element is an abutment, integrally formed with the segments of both seal rings, that has a radially outwardly slanted outer surface. When the mechanical seal is exposed to a selected pressure condition, the elastomeric member is disposed in intimate contact with the abutment, and applies an axial force thereto. The abutment transforms the axial force into an axial force component and a second radially inward force component. This second radially inward component also operates to bias the sealing faces of the seal ring segments into sealing contact with each other.
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A.W. Chesterton Company
Cummings Scott
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