Meets niosh/msha approval for intrinsically safe apparatus, for face mask p/n 336-890-083
NSN 5999-01-609-0848
NSN 2925-01-595-9720
NSN 5965-01-253-8699
NSN 5996-00-496-8806
NSN 5835-01-104-5707
NSN 7035-01-116-6223
NSN 5905-00-823-9675
NSN 5935-01-100-2081
NSN 6220-01-563-1998
NSN 5835-00-572-7445
NSN 5975-01-604-0655
NSN 5930-00-767-2304