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 5985-01-287-0569
NSN 5975-01-290-1982
NSN 6620-00-119-2803
NSN 6220-01-452-1953
NSN 5998-00-299-2740
NSN 5835-01-412-6901
NSN 6320-01-558-8844
NSN 6130-01-023-8803
NSN 6240-01-476-7935
NSN 5999-00-253-8383
NSN 7035-01-547-7415
NSN 5925-01-042-8668