[PapaBear3625]

Why wouldn’t you put the lid and rings on the jar when you put them in the oven instead of when you take them out?

I'm going to guess because you don't want the rubber rings on the lids melting in the oven.

[Library Lady]

If you put the oven on 200 it shouldn’t be a problem. It gets hotter than that in a pressure canner. Just wondered. . .