Papr, small, blue, niosh/msha, meets ansi/ul 913 standard for intrinsically safe apparatus, mark 2 replacement part
NSN 5905-00-449-1756
NSN 5990-00-951-5677
NSN 5925-00-089-2930
NSN 5950-00-801-1790
NSN 6610-00-432-7162
NSN 5905-01-660-4221
NSN 5835-01-340-7722
NSN 5920-01-423-0805
NSN 4140-00-688-7522
NSN 5915-01-603-3152
NSN 6110-00-465-2375
NSN 5930-01-266-5231