Always in the pass when I change the die in my sizer/lubricator (Lyman 450)I would clean up the die that I took out before putting it away. That can be a pretty messy job. I'm just wondering if its necessary. I usually use mineral sprits for cleaning all the old lube off and that can't be good for the O ring and taking it off every time probably doesn't help it either. Then after cleaning you have to oil it with something to keep it from rusting plus next time you use it, you have to get it back full of lube before starting to run the bullets. The lube doesn't seem to get hard over time so I'm thinking about just dropping them in a snack zip lock bag and store the that way. Opinions please. What do you do?