Gas Mask King
Gas Mask History Museum
U.S. Army M40A2 Field Protective Mask
The U.S. Army M40 series was developed to replace the M17A2 for the Army and Marines. The M40A2 shown here is equipped with second skin and C2A1 filter. This example was made by ILC Dover in 2006.
Similar masks in my collection: U.S. Army M40A1, U.S. Army M42A1, U.S. Air Force MCU-2/P
Size stamp on forehead "US M"
Manufacturer and date stamps on cheek "07 ILD 2J02" "M03C02"
Manufacturer and lot stamp on head strap "ILD07B204-483"
Manufacturer and date stamps on exhale valve cover "06 ILD 8240" "M01 C06"
Stamps on exhale valve "HE M2 C33" "ILD"
Stamp inside mask "CR06"
Manufacturer and date stamps on nose cup "07 ILD 9306" "M01C02"
Stamps on intake valve "02" "6"
Stamps on intake valve "02" "7"
Size stamp on cheek of second skin "M/L"
Manufacturer and date stamps on cheek of second skin "07 ILD 9405" "M04 C02"
M40/M42 Series Mask data sheet