instructions come with the canning lid sealers. you leave the lid lose and the vacuum sealer pulls the air out creating a vacuum, then you tighten the lid.
@@jimmargaretoosterhof4978 do you have the jar sealer? are you following the directions? the lid should not be tightened all the way or the air cannot get out.. there should be many videos online showing how to use the jar sealer but this is not one of them...