| 摘要 |
A nozzle assembly has a nozzle body and a nozzle insert. A sealing member for the assembly is mounted in a groove on the nozzle insert, so as to be removed with the insert. The sealing member, for example an O ring, provides both a sealing function and resiliently biases the insert and body into engagement with one another. Locking projections are provided on the body and insert. The insert has a frusto-conical surface on which the O ring is mounted, so that the O ring is both stretched radially and compressed between the body and insert. A second O ring seal can be provided. For ease of manufacture, locking projections on the insert are formed by a pressing operation, and these locking projections can include a short step to facilitate the engagement of the nozzle body and nozzle insert.
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