1. O-ring stands for Obsolete and it too wide and too stiff
2. Use X-ring as slightly narrower but way more free motion.
3. Unless boiling/flushing chain in solvent then in melted graphite grease or using the Norton chain oiler set to dribble a constant mess, then you are not lubing a chain effectively to matter.
3. I've done the experiment last decade, same results as desert riders, dry chain and sprockets last longer and less mess to clean up in gritty conditions.
5. Dry chain and sprockets last as long as half ass oiled for feel good sense chains.
6. There is no extra wear I can detect on dry run sprockets.
7. Rear chains don't need lube for heat or friction, they only benifit if enough to flush out the metal grit and external grits that abrades. Enclosed oil bath is great idea extending chain life but hard to do/expensive on rear chains
8. Chains don't turn or have internal motion enough to create an oil wedge so metal bares on metal no matter the amount of oil or grease surrounding the contacts.
9. Worn lose chains are what wears sprocket teeth, plus oily grit paste, because the loose linked chain don't ride deep in valleys but climbs up and bares on upper teeth as much as you can lift chain up by fingers at back of sprockets. Chain tension has NO Effect on this at all.
10. Spend your time riding and admiring the clean-ness for 10-12,000 mile intervals or spend good amounts of time cleaning and decorative oiling for similar intervals of plain chain cost change.
11. if some joy or self worth gained or just obcessive compulsive disorder to be doing some tedious cleaning ritual, have at it as much as you like, just don't rationalize in public its logical behavior.