Mark 2 replacement part, niosh/msha, meets ansi/ul 913 standard for intrinsically safe apparatus
NSN 6685-00-616-2448
NSN 6240-00-484-1190
NSN 6145-00-688-5697
NSN 5990-01-395-4194
NSN 5930-01-044-0512
NSN 5985-01-211-5821
NSN 6685-01-182-0301
NSN 5965-01-276-1070
NSN 6145-00-719-7395
NSN 6650-01-408-5089
NSN 6150-01-080-8751
NSN 6145-01-012-2823