Mark 2 replacement part, papr, blue, niosh/msha, meets ansi/ul 913 standard for intrinsically safe apparatus
NSN 6320-01-607-1491
NSN 5990-01-472-2447
NSN 5930-01-469-2570
NSN 6135-01-556-2125
NSN 5925-01-476-2798
NSN 5835-00-404-6149
NSN 6145-01-517-8681
NSN 6150-00-205-6775
NSN 6685-00-883-4608
NSN 7035-00-408-0269
NSN 6150-01-076-2605
NSN 5985-01-564-7517