| 摘要 |
A gland seal assembly is made up of three rings arranged side-by-side. The two outer rings are hard but the intermediate one is elastomeric. At one radial periphery (either inner or outer) the rings have abutting planar faces so that axial moving together of the hard rings compresses part of the intermediate ring between them. This part, bounded by the planar faces, is, in its uncompressed state, of a peripheral radius different from that of the hard rings so that it is set back from them but when axial compression is applied to it it is squeezed so that it projects radially and effects the desired sealing effect. This part of the intermediate ring is narrower then the remainder of the ring so that the peripheral radius of the remainder part is less affected by the compression.
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