Pumping seal having projections for axially positioning a biasing member

摘要

A seal assembly is for sealing between a housing and a rotary shaft includes an annular sealing member coupled with the housing and having inner and outer circumferential surfaces and a plurality of projections extending radially from the outer surface and spaced circumferentially about a central axis. Each projection has first and second axial ends and the plurality of projections define first and second projections. An annular biasing member is disposed about the sealing member outer surface and exerts an inwardly directed force on the sealing member. The biasing member has first and second ends and is arranged on the sealing member with the biasing member first end contacting the second end of each first projection and the biasing member second end contacting the first end of each second projection. As such, the biasing member extends axially and circumferentially between the first and second projections.

主权项

1. A seal assembly for sealing a space between a housing and a rotary shaft disposed at least partially within the housing, the seal assembly comprising:
a generally annular sealing member coupled with the housing and having a central axis, inner and outer circumferential surfaces and a plurality of projections extending generally radially outwardly from the outer surface and spaced circumferentially apart about the central axis, each projection having opposing first and second axial ends and the plurality of projections defining at least one first projection and at least one second projection; and a generally annular biasing member disposed about the sealing member outer surface and configured to exert a radially-inwardly directed force on the sealing member, the biasing member having opposing first and second ends and being arranged on the sealing member with the biasing member first end contacting the second end of each first projection and the biasing member second end contacting the first end of each second projection such that the biasing member extends axially and circumferentially between the first and second projections.