| 摘要 |
PROBLEM TO BE SOLVED: To provide a cap which closes an opening part of a vessel including various kinds of oil tanks, coolant tanks, cleaning solution tanks and other liquid feed tanks for car and reliably prevents the liquid in the vessel from leaking out. SOLUTION: In this cap 1 for closing the opening part in the refueling vessel, one end opening part 1b of an air hole for communicating with the outside of the vessel and the inside is provided in a side wall part of the cap. |
