I don't know about Ohio, but in my town the local Ace hardware (family owned/operated for probably 60 years) has selection on o-rings and other small "rebuild it" parts that makes Lowes and HomeDepot look like 7-11's. You might check those places too if Lowes doesnt pan out. Good Luck!
This post may contain subject matter which is influenced by any person I have met or heard of including (but not limited to) Plato, Newton, Copeland, Hawking, Reagan, people on facebook, members of this and other forums, folks with CBs back in the 70's, my coworkers, fellow band-members, and that guy who owns the convenience store down the street. Consider this your blanket citation of all prior works.