Looking for help with making 1-10 custom made teflong & metal gaskets/seals

Hey all,
I know this is a long shot, but I’m looking to make anywhere from 1 to 10 copies of a teflon/metal seal used for vacuum equipment.
Here’s a link to some details about the part itself

Does anyone have suggestions on where I could have some of these custom made and if they could be done so without breaking the bank?