exactly! this is HOW canning jars WORK…
when shown the above video, @Photon_noir recalled having had some success with that method (preheating, not boiling). not by design (to my understanding), just came along for the ride on it’s own…
I was gonna achieve it the same way one vac seals jar’s of distillate in a vac oven. went looking for a link so others might learn of that trick, but got distracted. 
maybe some other kind soul will explain or link for those who wander in and wonder what the fuck is with the @cyclopath in the cheap seats yelling “You Suck!” 
how about you @Justingram88?