Looking for good method to pack long term spare parts on long term
cruise - like a spare alternator, starter, diesel injector pump,
expensive things

I have used ziplock bags for parts and tupperware for my tools for 7 to ten
years without anything to keep it dry. It has worked good. Tools and parts
still don't have any rust. You could use some kind of cloth bag in the ziplock
bag for heave stuf, or a tupperware container if you can find one the right
size.

Dick