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Mechanical filter (respirator)

Face mask (filtering facepiece respirator) FFP3 with exhalation valve
Filtering half mask, reusable elastomeric respirator with pink replaceable pancake filters and grey exhalation valve
Full-face elastomeric respirators seal better.[1]

Mechanical filters are a class of filter for air-purifying respirators that mechanically stops particulates from reaching the wearer's nose and mouth. They come in multiple physical forms.

  1. ^ "Elastomeric Respirators: Strategies During Conventional and Surge Demand Situations". U.S. Centers for Disease Control and Prevention. 11 February 2020.

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