a flowable but suitable material one type of suitable material is a hot melt paraffin wax base material known in the art for sealing composite cans which is capable of being sprayed or otherwise applied on the base in the illustrated pattern in high speed processing particularly where the base as illustrated is round and especially where the tab 27 and other formations on the base are not readily and reliably physically optically or otherwise discriminated it can be relatively expensive and therefore impractical to orient the base so that an application of sealant material or other sealing provisions can be applied only to the exact location of a push in tab in the present invention the base 14 is rotated in the plane of its end wall 18 about an axis through its center in a suitable chuck or like device while hot melt sealing material 36 is sprayed from a stationary nozzle directed at a zone through which the tab 27 travels the material 36 can be continuously sprayed while the base 14 makes several full rotations in front of the spray nozzle so that several coats of material are applied it has been found that good results are obtained when the base is caused to rotate.