| 摘要 |
A fluid seal for sealing against leakage between relatively moving machine elements, capable of establishing a lubricant film between sealing surfaces in sliding contact without affecting sealing and accomplishing pressure balancing of the seal so that the pressure at the sealing surfaces is substantially less than the sealed pressure, includes as its essential elements an elastomer sealing surface with shaped rigid members embedded therein in sliding contact with a rigid sealing surface. The shape of the embedded rigid members enables formation and continued generation of the lubricant film and pressure balancing of the seal by controlling the deformation of the elastomer surface when the latter is subjected to the sealed pressure and friction at the sliding surfaces. The seal can be formed both as a radial type seal with annular sealing surfaces and as an axial type seal with flat sealing surfaces.
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