They are Unobtainium.
I don't know if it would work long-term, but you could try to either find some "generic" gasket and cut it to fit, or maybe a hail-mary repair would be something like the adhesive backed D gasket for the main and compartment doors.
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Meddle not in the affairs of dragons, for you are crunchy, and taste good with ketchup.
Terry
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