| 摘要 |
In an assembly, e.g. a fluid pump, comprising an elongate member (e.g. a displacement rod (16)) slidably disposed with respect to a sealing member (e.g. seal (18)) the elongate member comprises a resiliently deformable sleeve or coating (74) and the sealing member (18) is substantially rigid and engages the sleeve or coating (74) and resiliently deforms in the region of contact. There may also be means (82, 300, 352) for removing unwanted deposits from the elongate member. |
