| 摘要 |
<p>A sealing assembly comprises a first molded graphite ring (11) of generally triangular cross section, one side of which is in use perpendicular to the longitudinal axis of a rotatable and/or slidable shaft (1), the surface of which is to be sealed in an axial direction against fluid leakage therealong, and a second side which is in use disposed parallel to said shaft to engage the inner wall of a housing (4) surrounding said shaft (1), a second moulded graphite (13) ring of generally triangular cross section and of generally similar dimensions to the first moulded ring (11), said second ring (13) being in use installed in inverted relation to the first ring to define therebetwen an axially extending void around said shaft together with a third moulded graphite ring (12) having a triangular cross section and installed between said first and second rings (11, 13) to substantially completely fill said void prior to the application of axial pressure to said rings to develop a sealing force between the inner wall of said housing (4) and said shaft (1).</p> |
