| 摘要 |
A cap for a fuel tank of the type comprising a labyrinth path between the fixed elements and the moving elements of the cap. Said labyrinth path is formed by concentric ribs defining grooves which intercommunicate by way of interruptions forming baffles, and a sealing element disposed on said ribs. Said sealing element has at least one projection which is adapted, in one angular position of the sealing element with respect to the labyrinth path, to close said path and, in another angular position, not to close said path.
|
