Face mask seal for use with respirator devices and surgical facemasks, having an anatomically defined geometry conforming to critical fit zones of human facial anatomy, and capable of being actively custom fitted to the user's face

A face mask seal, comprising:

• a first surface;
• a second surface positioned opposite the first surface;
• an outer perimeter, the second surface or outer perimeter positioned for coupling to a face mask;
• an opening penetrating from the first surface to the second surface;
• and
• an inner perimeter having five convex and five concave accentuations, the inner perimeter completely surrounding the opening,
• two first convex accentuations of the five convex accentuations separated from each other by a first concave accentuation of the five concave accentuations,
• two second convex accentuations of the five convex accentuations separated from the first two convex accentuations by two second concave accentuations of the five concave accentuations, and
• a third convex accentuation of the five convex accentuations separated from the two second convex accentuations by two third concave accentuations of the five concave accentuations,
• the first two convex accentuations custom conforming to two first critical fit zones, respectively, on a user's face,
• the second two convex accentuations custom conforming to two second critical fit zones, respectively, on the user's face,
• the third convex accentuation custom conforming to a third critical fit zone on the user's face,
• the two first critical fit zones each including nasal bridge, nasomaxiliary ridge, maxillary zygomatic ridge, and a first portion of zygomatic process,
• the two second critical fit zones each including a second portion of the zygomatic process, bucchal wall soft tissues and a first portion of mandibular ramus,
• the third critical fit zone including a second portion of the mandibular ramus on either side of submental soft tissues, and
• the inner perimeter including one or more additional accentuations in a direction substantially perpendicular to either the first surface or the second surface and substantially perpendicular to the five convex and the five concave accentuations.