A/C push buttons gasket

Hey Everyone,
I've got a 1966 Dart GT that I'm putting back together and I need a A/C push button switch gasket. See photo. Any help in finding one would be greatly appreciated.
Thank you.

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Is it felt or foam? Either way. places like Hobby Lobby should have material that will duplicate the original. I bought some black sheet foam for my floor vent doors. It worked perfect.