I’d like to learn about using an alternative like that. My little understanding was it was only good for waterbath canning as the pressure canning is too hot and melts it out.
My grand parent used the wax in like the wire-clamped jars such as lightning, atlas, ball and McDonald jars, the seal wasn't always reliable so they used the wax as a back up. they couldn't afford new jars and lids with seal rings.