| 摘要 |
A fluid seal assembly with a primary seal element and a wear sleeve element. The primary seal includes a casing and a seal element that contacts a sealing surface on the wear sleeve. The wear sleeve has a cylindrical portion that overlies a portion of the sealed mechanism, and the cylindrical portion has a surface pattern thereon formed by metal cold flow, preferably by drawing and ironing. The surface pattern includes at least one hydrodynamic pumping element having a contoured portion that is radially offset from the remainder of the cylindrical portion of the sleeve. |
