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The Duram Escape Mask is an emergency evacuation mask you can carry in your pocket, designed to provide respiratory protection as well as reduce the health risk and mortality rate associated with the inhalation of toxic air caused by fire, smoke, carbon monoxide (CO), chemical leakage or Chemical/Biological attack. Learn More

Duram COGO

Duram COGO

A personal respiratory protective device with visor, hood and built-in filter for escape from fire. Protects against smoke and CO (Carbon Monoxide) inhalation.

Complies with European Standard EN-403.


  • Easy to use. Dons within seconds. No adjustment straps
  • One size fits all
  • Strong, fire-resistant, elastic rubber hood, protects the entire head and seals comfortably at the neck
  • Large visor, made of flame retardant transparent film, allows a wide field of view
  • A unique breathing device (patent pending), enables rapid exhalation and improves the physiological conditions for the user, preventing built-up of heat or vapour inside the mask
  • A filtration unit containing low pressure electrostatic particle filter, impregnated charcoal cloth layers to absorb toxic gases and catalyst for Carbon Monoxide Oxidation
  • Training model available



  • Special Polychloroprene Latex Compound. 
  • Elongation at break > 700%
  • Tensile strength > 150 kg/cm2
  • Temperature resistance: 200ºC
  • Fire resistance as per the requirements of NFPA 701


  • ETFE film – Copolymer of Polytetrafluoroethylene + Ethylene monomer
  • Tensile strength: 50N/mm2
  • Elongation at break: 450%
  • Tear resistance: 500 N/mm
  • Temperature resistance: 150ºC
  • Flame retardancy : UL 94 V-0
  • Light transmission: > 95%

Breathing Device:

A device combining two valves for exhalation and inhalation + a soft mouthpiece, all in one unit.

Filter assembly:
Two canisters containing:

  • Electrostatic particle filter
  • Layers of impregnated activated charcoal cloth
  • Catalyst 
  • Desiccant


  • Approximate (package) dimensions: 10x12x14 cm
  • Approximate (package) weight: 650 gr


Test Gas 

Gas concentration (ml/m3) 

Flow rate (l/min)

Breakthrough criteria
(EN 403)

Breakthrough time

Propenol (Acrolein) 



> 15 min (at 0.5 ml/m³)

20 min

Hydrogen Chloride (HCI)



> 15 min (at 5 ml/m³) 

> 15 min

Hydrogen Cyanide (HCN)  



> 15 min (at 10 ml/m³)

> 15 min

Carbon Monoxide (CO)



Total amount of CO penetrated during 15 min < 200 ml  

33 ml
during 15 min


(EN 403)

Test results

Particle filter penetration


< 1.3%

Inhalation resistance

< 8 mbar

3.6 mbar

Exhalation resistance

< 3 mbar

1.1 mbar

C02 content of inhalation air

< 2.0%

< 1.9%

Protection factor

> 50

> 50



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