International 244 parts needed

[fish923]

Hello Forum friends: I have a 1982ish International 244 and I am looking for the hydraulic piston rings. Case says they are no longer manufatured. I am hoping there is another source for these rings. Can anyone help? I have googled until I am exhausted.
Thanks for any help you can provide.
Mike

 

[fish923]

Sorry I meant to say "o-rings"