Niosh approval no. Tc-23c-140; 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 4140-01-031-0286
NSN 6685-01-350-3451
NSN 5935-00-624-4911
NSN 4140-01-275-2729
NSN 6240-01-512-1161
NSN 6135-00-145-8884
NSN 5960-01-287-4187
NSN 5990-01-162-9220
NSN 5996-01-348-7370
NSN 5895-01-323-1980
NSN 5990-00-062-9483
NSN 5855-01-233-2767