The can is Auserd also extremely dense, no matter what you store in it (or how long you do it), it does not dry out determined. The can is still tight, even with a slight overpressure in the inner. (I once mineral water (carbonated) purely filled, cover draufgemacht and flipped. So nothing ran out I started to shake and sometimes even here they remained relatively long tight)
The plastic and the sealing ring also have no nominal values inherent odor and both are easy to clean.
I'm going to still buy a pair more.