Can your unmentionables take the heat?Combat vehicle crewmen (CVC See CSC. ) and air crewmen, mind if we ask you a personal question? Just what are you wearing under your aramid Aramid fibers are a class of heat-resistant and strong synthetic fibers. They are used in aerospace and military applications, for ballistic rated body armor fabric, and as an asbestos substitute. The name is a shortened form of "aromatic polyamide". (fire-resistant fiber) coveralls this winter? No, we're not being nosy nos·y or nos·ey adj. nos·i·er, nos·i·est Informal 1. Given to prying into the affairs of others; snoopy. See Synonyms at curious. 2. Prying; inquisitive. , just concerned. Truth is, if you're caught in a vehicle or aircraft fire, your underwear plays a crucial role in keeping you alive. Aramid fibers ar·a·mid fiber n. A strong, heat-resistant fiber formed of polymers with repeating aromatic groups branching from a carbon backbone, used in materials for bulletproof vests and radial tires. Also called polyaramid. can withstand temperatures up to 700[degrees]F. But polypropylene--the material found in some cold weather undershirts and drawers--melts at less than half that temperature. In a fire, aramid can transfer enough heat to your polypropylene polypropylene (pŏl'ēprō`pəlēn), plastic noted for its light weight, being less dense than water; it is a polymer of propylene. It resists moisture, oils, and solvents. underwear to melt it to your skin. A fire you might otherwise survive becomes a death trap death trap Noun a place or vehicle considered very unsafe . Never wear polypropylene cold weather undershirts and drawers in your combat vehicle or aircraft. Same goes for lightweight polyester polyester, synthetic fiber, produced by the polymerization of the product formed when an alcohol and organic acid react. The outstanding characteristic of polyesters is their ability to resist wrinkling and to spring back into shape when creased. cold weather undershirts and drawers. Polyester's another material that can melt. Neither are authorized au·thor·ize tr.v. au·thor·ized, au·thor·iz·ing, au·thor·iz·es 1. To grant authority or power to. 2. To give permission for; sanction: for CVC, air crews and other personnel who wear fire-resistant uniforms. Read your underwear labels. If your underwear contains polypropylene or polyester, don't wear them with your fire-resistant uniform. If you're not sure what they're made of, don't wear them. Now that you know what not to wear, just what should you be slipping into? For CVC, extreme cold weather undershirts and drawers are good choices. They're 100% cotton. The natural cotton fibers won't melt, and they also help keep heat away from your body in a tank fire, Air crewmen should wear the flyers undershirt and drawers made out of aramid fibers. Aramid is designed to resist flames and not to melt Both types of underwear are authorized for use by CVC and air crewmen. Extreme Cold Weather Undershirt (100% cotton) Size NSN 8415- X-small 01-051-1174 Small 00-270-2012 Medium 00-270-2013 Large 00-270-2014 X-large 00-270-2015 Extreme Cold Weather Drawers (100% cotton) Size NSN 8415- X-small 01-051-1175 Small 00-782-3226 Medium 00-782-3227 Large 00-782-3228 X-large 00-782-3229 Flyers' Undershirt (aramid) Size NSN 8415- X-small 01-043-8375 Small 00-485-6547 Medium 00-485-6548 Large 00-485-6680 X-large 00-485-6681 Flyers' Drawers (aramid) Size NSN 8415- X-small 01-043-4036 Small 00-467-4075 Medium 00-467-4076 Large 00-467-4078 X-large 00-467-4100 |
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