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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. Oxygen mask - Wikipedia

   en.wikipedia.org/wiki/Oxygen_mask

   An oxygen mask is a mask that provides a method to transfer breathing oxygen gas from a storage tank to the lungs. Oxygen masks may cover only the nose and mouth (oral nasal mask) or the entire face (full-face mask). They may be made of plastic, silicone, or rubber. In certain circumstances, oxygen may be delivered via a nasal cannula instead ...

4. 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. [71]

5. Cloth face mask - Wikipedia

   en.wikipedia.org/wiki/Cloth_face_mask

   A cloth face mask is a mask made of common textiles, usually cotton, worn over the mouth and nose.When more effective masks are not available, and when physical distancing is impossible, cloth face masks are recommended by public health agencies for disease "source control" in epidemic situations to protect others from virus laden droplets in infected mask wearers' breath, coughs, and sneezes.

6. European respirator standards - Wikipedia

   en.wikipedia.org/wiki/European_respirator_standards

   R (reusable): if the filtering half-face mask can be used for more than one working day, so it is reusable. Additional suffixes include: Anti-clogging NR masks (D). When the half mask has passed the dolomite dust test, a letter D can be added to indicate that the service life may exceed 8 h. [14] Example: FFP3 NR D. Valve.

7. Disposable masks can take up to 450 years to decompose ... - AOL

   www.aol.com/lifestyle/disposable-masks-450-years...

   Just a single face mask, according to a study in Environmental Advances, can release as many as 173,000 microfibers per day into the seas. ... which can be shipped to the TerraCycle when full. The ...