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The OM-90 is the current service gas mask of the Armáda České republiky (Army of the Czech Republic). Its production started in 1998. It is available in three sizes, with size 2 designed to fit 95% of the population.
Overview[]
The facepiece is made of bromobutyl rubber. Its lenses are two circular, forward-looking tempered glass eyepieces optimized for optical use. It features a drinking tube system compatible with the CamelBak system and a central primary voice emitter. Unlike the previous OM-10 and OM-10M series masks, the OM-90 has a textile five-point head harness. The OM-90 also features a dual filter port design, allowing the filter(s) to be inserted on the left side, the right side, or both. It is not uncommon to find the OM-90 with one free port and the second one plugged. It includes an oronasal cup and an inner rubber seal. The voice clarity through the emitter is over 95% (as stated by the manufacturer), continuing the Czech tradition as a clone of the Avon S10/FM12 mask, with the eyepieces offering slightly less peripheral vision and the drinking system using the same push-pin style as the M17 (and subsequent OM-10/OM-10M clone masks).
Filter[]
The OM-90 is a STANAG 4155 compliant mask, and, when issued in military kit, comes with an OF-90 (Ochranný Filtr 90) filter.
Kit[]
The kit consists of a rubberized bag with plastic rectangles on the sides to maintain its shape, a manual, the OM-90 mask, an OF-90 filter, a drinking tube-compatible canteen cap, and an NBC suit (either the JP-75A or JP-90). The masks are sometimes seen with vz.95 camouflaged pouches. Although these pouches are primarily made for the civilian sector, soldiers occasionally purchase and use them.
Chemical/NBC Suits[]
The OM-90 is used with various NBC suits, primarily the FOP-96. The FOP-96 (Filtrační Ochranný Převlek, translating to "Filtrating Protective Suit") is available in various colored versions and has two types: a standard model issued to soldiers and a first responder variant (often in red or orange) made as a single piece instead of the two parts of the standard model. The first responder version is used by Czech chemical units, such as the 31st PrchBO.
The OPCH-05 is a Czech special-purpose chemical suit, replacing the outdated OPCH-90. It can only be used with CM-6 and OM-90 masks. It is used with or without its eight-filter PAPR. Its development began in 2003, was completed by 2005, and then entered production.
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