| 摘要 |
A plastic gas cap having a cap element with a plastic skirt having an inner skirt diameter and including ring retaining tabs extending inwardly from the inner skirt, a plug element having a flange at one end sized and shaped to fit within the plastic skirt and past the ring retaining tabs; and a plastic retaining ring having an outer ring diameter and being secured between the flange and the tabs to secure the plug element in the cap element by an interference fit within the inner skirt diameter which reinforces said plastic skirt and makes it more rigid.
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