I have to wonder, because you’d think that 100,000 years would degenerate even some of the armor of the Mata (but that’s a question for another day.) Would any amount of time - say one hundred times what the Mata experienced, or 100,000,000 years - cause even the smallest signs of wear on the inorganics/armor of their being?
Rust does exist in MU, so probably yes depending on the conditions inside the canister. Remember rust on the Vahi and original Hydraxon’s mask.
You may find some answers to your questions in this topic: