in the central portion of the upper surface portion 24 and the engaging portion 6 the uneven recess 7 the engaging through hole 8 the stop rib 9 and the direction changing portion 10 are formed similarly to the above described degassing device 1 normally the lid 21 having the structure as described above is placed over the container 100 in the state in which the fitting portion 23 of the lid is fitted in the caulked edge 101 of the container for use as shown in fig1 however when gases are removed from the container 100 as necessary the depressed portion 5 engaging portion 6 of the lid is placed over the bulged portion 102 caulked edge 103 of the container as shown in fig1 and the lid 21 is placed over the container 100 in the reversed state for use at this time the nozzle 105 is inserted into the engaging through hole 8 as shown in fig5 but it impinges upon the middle portion of the inclined surface of the stop rib 9 formed so as to realize the state smaller in diameter than the tip of the nozzle as shown in fig6 and therefore the nozzle 105 will not pass any further therethrough the nozzle 105 is pressed in the impinged state and in the state in which the engaging portion 6 of the lid is stopped at the caulked edge 103 of the container the nozzle is in the sufficiently pressed state.