Is it possible to replace the foam within the brake booster?

[76duece]

Hello, i'm doing the bushings on the brake and clutch pedal, and I noticed there is a foam ring around the shaft that the brake pedal actuates. Mine, being 20 years old has started to deteriorate. I don'e see anything on realOEM, and I'm wondering if anyone else has noticed this and done anything about it. Thanks in advance.
Larry


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[Vintage42]

Looks like it only comes as part of the booster.
https://www.ecstuning.com/b-genuine-...r/34331162963/
It is just to keep dust out of the vacuum diaphragm.