93210-13657-00 O-Ring size

[FJ1200W]

Greetings -

I've searched high and low to find out if this is a standard size o-ring, but have only had luck getting  headache.

I bet I have one somewhere, but why is this so hard?

The part numbers were once coded, where are my Excedrin.....

[FJ1200W]

I knew I had them somewhere - finally found some new and lightly used