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Vintage MSA Model 'S' Chemox Oxygen Breathing Apparatus Kit with rare Green Lens
Very rare - Vintage MSA Model S Chemox Oxygen Breathing Apparatus Gas Mask, case, instructions
MSA Model S Gas Mask, Case, Instructions, Inspection Tag

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Very rare green lens - great collector's item!
Our Price: $299.95

Availability:: Usually Ships in 3 to 5 Business Days
Product Code: AAAGAS-258

Description Extended Information
This is a fabulous collector's item - a vintage MSA Model "S" Chemox Oxygen Breathing Apparatus with very rare full facepiece green lens. It includes the original case made of wood and metal, original instructions for use, and the original inspection tag dated 2/15/66 - all items as shown in photo.

Mask was manufactured by Miners Safety Appliances (MSA) in Pittsburgh, Pa., circa 1960's. This particular mask was put into service in 1966.

The case measures approximately 22"L x 15-1/2"W x 9"H.

Condition: Excellent Vintage, with some wear to interior/exterior case.
  • The MSA Model S was the most advanced system of it's day:
  • The United States Bureau of Mines extended to the Chemox Oxygen Breathing Apparatus approval 1307 against the exacting requirements of Approval Schedule 13C for a period of 45 minutes.
  • The canister was made up of five layers of chemical with the bottom layer (which first reacts with the exhaled breath) containing the catalyst mixed with the KO.
  • Extensive investigation showed that the maximum efficiency was obtained with this construction. The chemical was prepared and packed under carefully controlled conditions of humidity and each canister was fluoroscopically inspected to insure optimum performance.
  • The canister weighed approximately 4 pounds and the complete apparatus with canister inserted approximately 13 pounds, thus producing the highest and most efficient self-contained breathing apparatus then available.

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