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  2. Joint Service General Purpose Mask M-50/M-51 - Wikipedia

    en.wikipedia.org/wiki/Joint_Service_General...

    2006–present. Specifications. Weight. 1.9 lbs (M50) The M50 series protective mask, officially known as the Joint Service General Purpose Mask ( JSGPM or JSGPM/M50 ), is a lightweight, protective mask system consisting of the mask, a mask carrier, and additional accessories. It was adopted by the U.S. military in 2006 and is manufactured by ...

  3. Powered air-purifying respirator - Wikipedia

    en.wikipedia.org/wiki/Powered_air-purifying...

    A powered air-purifying respirator ( PAPR) is a type of respirator used to safeguard workers against contaminated air. PAPRs consist of a headgear-and-fan assembly that takes ambient air contaminated with one or more type of pollutant or pathogen, actively removes (filters) a sufficient proportion of these hazards, and then delivers the clean ...

  4. Glossary of breathing apparatus terminology - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_breathing...

    See: venturi mask air-filtering respirator An air-filtering respirator is a breathing apparatus which removes particulates from the ambient air by passing it through a filter. air-purifying respirator An air-purifying respirator is a respirator which uses a filter, cartridge, or canister to remove specific air contaminants by passing ambient air through the air-purifying component ...

  5. M17 gas mask - Wikipedia

    en.wikipedia.org/wiki/M17_gas_mask

    The M17 Protective Mask is a series of gas masks that were designed and produced in 1959 (as a replacement of the M-9 gas mask) to provide protection from all types of known chemical and biological agents present. The M-17 was issued to troops in the Vietnam War, and was standard issue for the U.S. Military until it was replaced by the M40 ...

  6. These KN95 and N95 Face Masks Help Protect Against the ... - AOL

    www.aol.com/kn95-n95-face-masks-help-182200553.html

    The mask has several layers of non-woven soft and breathable fibers and filters out at least 95% of airborne particles as small as 0.3 microns. What reviewers say : “I bought a cheaper brand and ...

  7. Rebreather - Wikipedia

    en.wikipedia.org/wiki/Rebreather

    A rebreather is a breathing apparatus that absorbs the carbon dioxide of a user's exhaled breath to permit the rebreathing (recycling) of the substantially unused oxygen content, and unused inert content when present, of each breath. Oxygen is added to replenish the amount metabolised by the user. This differs from open-circuit breathing ...

  8. MCU-2/P protective mask - Wikipedia

    en.wikipedia.org/wiki/MCU-2/P_protective_mask

    At Ellsworth Air Force Base. The MCU-2/P is a protective mask used by the United States Air Force and United States Navy, originally designed for the US Army as the XM-30 mask. In December 1982, the U.S. Air Force took over the XM-30 mask development. In 1983, the U.S. Navy requested the first masks off the production lines since the Army mask ...

  9. High altitude breathing apparatus - Wikipedia

    en.wikipedia.org/wiki/High_altitude_breathing...

    High altitude breathing apparatus is a breathing apparatus which allows a person to breathe more effectively at an altitude where the partial pressure of oxygen in the ambient atmospheric air is insufficient for the task or to sustain consciousness or human life over the long or short term. High altitude breathing sets may be classified by type ...

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