Blue, niosh/msha, meets ansi/ul 913 standard for intrinsically safe apparatus
The portion of a mask, air line; mask, chemical-biological; mask, gas; or other breathing equipment mask that partially or completely encloses the user's face.
NSN 6150-01-373-3813
NSN 5835-01-468-0579
NSN 5996-01-318-1407
NSN 4140-00-320-8614
NSN 5915-01-359-4847
NSN 5965-01-238-0488
NSN 6610-01-259-0251
NSN 6620-00-098-5652
NSN 5910-01-483-4588
NSN 6610-00-859-6136
NSN 6650-01-004-1625
NSN 5990-01-609-4793