Wide Mouth Jar Sealer

My thoughtful man bought this get- up last week. I'm using it to seal my jars for curing. 

Photo below is the vacuum to suck the air out of the jar. 

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! 

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.