[roadcat]

Not quite sure how sealed masks of this type have an “Expiration Date”.

Expiration is about the elastic bands to fasten the mask. Supposedly they can be fine for years until exposed to air and light. Easily remedied by fastening another elastic cord or band. As for the SEIU, they're nothing but gangster thugs.

[HollyB]

Perhaps the plastic bands can dry rot. But in a jam, that can be fixed.