[Red Badger]

A “shelf life” of 35 years? Won’t the rubber seals, bushings, grommets and o-rings deteriorate long before that? Won’t the fuel go bad?

I see you haven't been involved in "procurement". The money is not in the original sale, but in the spare parts orders!....;^)

[hellbender]

Won’t the rubber seals, bushings, grommets and o-rings deteriorate

The spilled vodka and alcohol fumes from Russian maintenance crews will be really hard on those components.