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2. Elastomeric respirator - Wikipedia

   en.wikipedia.org/wiki/Elastomeric_respirator

   Full-face elastomeric respirators generally seal better. [2] For substances hazardous to the eyes, a respirator equipped with a full facepiece, helmet, or hood is recommended. [35] Eyeglasses can clash with elastomeric masks. Conventionally, full-face masks are modified, with prescription lenses inserted into the mask.

3. Respirator - Wikipedia

   en.wikipedia.org/wiki/Respirator

   An open circuit SCBA typically has three main components: a high-pressure gas storage cylinder, (e.g., 2,216 to 5,500 psi (15,280 to 37,920 kPa), about 150 to 374 atmospheres), a pressure regulator, and a respiratory interface, which may be a mouthpiece, half mask or full-face mask, assembled and mounted on a framed carrying harness. [76]

4. N95 respirator - Wikipedia

   en.wikipedia.org/wiki/N95_respirator

   An N95 respirator is a disposable filtering facepiece respirator or reusable elastomeric respirator filter that meets the U.S. National Institute for Occupational Safety and Health (NIOSH) N95 standard of air filtration, filtering at least 95% of airborne particles that have a mass median aerodynamic diameter of 0.3 micrometers under 42 CFR 84, effective July 10, 1995.

5. 3M - Wikipedia

   en.wikipedia.org/wiki/3M

   The shortages led to the U.S. government asking 3M to stop exporting US-made N95 respirator masks to Canada and to Latin American countries, [116] and President Donald Trump invoked the Defense Production Act to require 3M to prioritize orders from the federal government. [117]

6. Mechanical filter (respirator) - Wikipedia

   en.wikipedia.org/wiki/Mechanical_filter_(respirator)

   Filtering half mask, reusable elastomeric respirator with pink replaceable pancake filters and grey exhalation valve Full-face elastomeric respirators seal better. [ 1 ] Mechanical filters , a part of particulate respirators , are a class of filter for air-purifying respirators that mechanically stops particulates from reaching the wearer's ...

7. European respirator standards - Wikipedia

   en.wikipedia.org/wiki/European_respirator_standards

   3M 2091 filter with P3-BR approval. European standard EN 143 defines the 'P' classes of particle filters that can be attached to a face mask. These filters are typically used on reusable respirators, like elastomeric respirators. [5]