Jarring Flakes

just bought 4 tins of erinmore flake which will take some time more than a year to smoke - i dont trust the tins so intend to jar all four & jar separately a bit for sporadic smoking .
question - the flakes if left in tact leave a lot of air space around them even if to the top of the jar -

what is the best way to jar these flake strips - they will definitely break up if pressed too hard to leave little or no space around them.

i prepare the tobacco for smoking by cutting 2 strips into 1/4" squares then rub to a course finish. should i do this for all the strips then jar ?? or just place the strips in the jars & compress who cares what happens to the strips since i will work them later anyways ??
i jarred escudo without breaking up the disks but a lot of air then is in the jars.
thanks guys

ok thanks - had been concerned as had read that the square tins were an issue.

intend to buy more to keep about 5 years out if i last that long.

will just seal the tins in a pelican seal proof container used to seal my camera on the water when not in use.

will jar the open tin.
interesting - i have a pipe i smoked only erinmore back in the early sixties - dint smoke till now - that pipe still has the ( ghost ) flavor of that erinmore - even the ghost tastes better than today's flake.

it also tastes ok in an estate gourd calabash i bought recently which it seems also was an erinmore smoker also with a ghost flavor -

that old erinmore sure lasted - was fruitier than today's.

enough of my rant.
smoking gets to be a challenge in minus 40 degree winter camping but it will be relaxing hearing the wolves & drawing on that pipe.- looking forward to a calabash smoke with the wolves .
thanks for responses - will leave in the tins in that pelican case.