Papr, small, blue, niosh/msha, meets ansi/ul 913 standard for intrinsically safe apparatus, mark 2 replacement part
NSN 5855-01-584-6138
NSN 5895-01-020-8990
NSN 5999-00-446-9111
NSN 5950-00-333-9029
NSN 2925-00-386-1127
NSN 6240-00-987-5464
NSN 6145-00-414-5315
NSN 6240-00-170-5302
NSN 5950-01-290-8844
NSN 6620-00-678-8777
NSN 5965-01-307-8301
NSN 5950-01-514-7603