Tank cap for motor vehicle, has sealing seat cooperating with sealing ring, and widening in conical manner towards interior of tank, where ring comprises of sealing lips cooperating with sealing surface of seat

摘要

The cap has a sealing seat (5) cooperating with a sealing ring (23), and widening in a conical manner towards the interior of a tank, where the seat has a sealing surface (4). The sealing ring is constituted of an elastomer that is resistant to fuel and is inserted in an annular groove (22) of a closing shutter (3). The ring comprises of sealing lips cooperating with the sealing surface.