OP
O'Reillys couldn't help, they had the same filter as NAPA.
I sent an email to JD Parts Corporate and they told me that I need to get the complete seal kit RE516553. This will have the o-ring along with several others that I don't need.
The local dealer has this kit for $15
Note to self, keep this o-ring and use it until it falls apart!
Thanks for everyone's help.