Technical C-4 Ford speedometer cable gaskets

I have a C-4 Ford in my 48 ford and need the 2 seals for speedometer. Where can I get one around Portland, me

 

I'd try a local transmission shop to see if they can order them.

 

If you are talking about the part that inserts into the C4 transmission as I recall they are o-rings and you can probably get them at a hardware store.

 

^^^^ That what I was thinking….get the thin ones that are just slightly bigger than the body of the nylon gear holder…