Mark 2 replacement part, niosh/msha, meets ansi/ul 913 standard for intrinsically safe apparatus
NSN 6620-01-272-7831
NSN 5985-01-174-5256
NSN 6130-01-440-9295
NSN 5950-01-215-0703
NSN 5960-01-324-8751
NSN 5950-00-126-7280
NSN 5985-01-368-8289
NSN 5915-01-603-4913
NSN 5920-00-233-7366
NSN 6685-00-363-1701
NSN 5935-01-106-7458
NSN 6130-01-297-6971