Thanks for the links, like @john.jcb, only one of them worked for me though. The first one came up and it appears that this is what is being described for mason jars
The second link lead to a help page about google maps crashing.
In regards to the 1-piece lids: Canning is possible with the mason jars and the 1-piece lids. Just don't screw the lid on too tight (no different than a 2-piece lid). The main reason for the 2-piece lids is cost and resources, in an ideal world, the lid insert (flat part) gets replaced after every use in water bath or pressure canning, the bands (screw down part) gets re-used over and over. A pack of 10 lid inserts is very cheap in the US. Keeping the logic of the "only use the seal once", the 1-piece lids get expensive if you are canning a lot of things year after year. I've used 1- piece lids for canned stuff that I'll be giving away and I know it will only get used once.