Does anyone know where I might be able to find soft silicone type material strips like on the inside of 3M Aura masks?
I'm doing a search but not quite finding what I'm looking for.
Image of what I'm talking about attached
I have cannibalized old Auras to alter this one so it has a better fit and doesn't leave as many gaps. Seems to work fine, but I need more strips to alter a couple more.
I obviously am not going to destroy masks that are still usable in order to make the alterations, the masks that were destroyed to fix the other one were on their way out anyway.

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