| 摘要 |
A system for inserting O-rings into axially spaced annular grooves in a cylindrical cavity includes a cylinder for insertion to a limited extent into the cavity from one end, with a rod extending from the cylinder through the cavity; a sleeve for insertion to a limited extent into the cavity from the other end; spacer rings for selective mounting on the cylinder and the sleeve to selectively position the cylinder and sleeve relative to the cavity, whereby to cover all but one of the annular grooves within the cavity. A tube fits into the sleeve and over the rod to push an O-ring along the rod and into the one annular groove left exposed by the cylinder and sleeve.
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