Used on american optical models r/s4000, r/s5000, r/s6000 and r/s7000 respirators; niosh approved tc-21c-249/250; sole source required by statute 6.302
A self-contained unit designed for placement in the holder of a respirator or air line mask. It may consist of a filtering element of fibrous material such as felt, paper, or the like secured between two end plates; or it may be a cylindrical container of light weight construction having flat or slightly rounded ends which may be either perforated or of wire mesh, filled with charcoal or chemicals which absorb contaminants from the air passing through it. See also filter, respirator, air filtering.
NSN 4140-01-180-2775
NSN 5855-00-079-2370
NSN 6320-01-202-8761
NSN 5996-00-205-2933
NSN 5855-00-149-0766
NSN 6110-00-435-1092
NSN 6150-00-346-6679
NSN 5925-00-471-4635
NSN 6220-01-185-3925
NSN 6320-01-527-0211
NSN 5915-00-683-8248
NSN 2925-01-658-4470