My thoughtful man bought this get- up last week. I'm using it to seal my jars for curing.
Only good for wide mouth jars. I screwed up and was doing it wrong at first, I tried sucking the air out with the sealer ring ON. Oops! It won't work with the sealer ring on. Doh. Live & learn!
Photo below is the vacuum to suck the air out of the jar.
When you open the jar after it's been sealed it really pops!
We're also using it to seal greens for salads in jars to stay fresher longer.
KEEP IT GREEN!