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 5975-00-117-9515
NSN 5935-00-719-6849
NSN 5975-00-023-1937
NSN 6240-01-090-9146
NSN 5945-00-827-2158
NSN 5930-01-602-9160
NSN 5950-01-214-8923
NSN 6110-01-064-5076
NSN 6105-01-100-1857
NSN 6105-01-062-1422
NSN 5999-01-237-2666
NSN 5985-01-239-2764