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 Chembayo

Chemical/Biological Escape Mask

A personal emergency device for short-term respiratory protection during escape from an area of low concentration of chemical or biological agents.


  • Pocket-size.
  • 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.
  • High-efficiency, electrostatic particle filter, with extremely low pressure-drop to allow easy breathing.
  • Layers of activated charcoal with special impregnation to absorb toxic gases.
  • 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.
  • Training model available.
  • Available in two colours: yellow and black.




  • Special Polychloroprene Latex Compound
  • Elongation at break: > 700%
  • Tensile strength: > 150 kg/cm²
  • Temperature resistance: 200°C
  • Fire-resistant to the requirements of NFPA 701


ETFE film – a copolymer of Polytetrafluoroethylene with Ethylene monomer.

  • Tensile strength: 50N/mm²
  • Elongation at break: 450%
  • Tear resistance: 500 N/mm
  • Temperature resistance: 150°C
  • Flame retardant : UL 94 V-O
  • Light transmission: > 95%

Breathing Device:

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

Filter Assembly:

Multi-Layer filter includes the following:

  • External polyester screen, fire resistant to the requirements of NFPA 701
  • Electrostatic + melt blown combination high efficiency particle filter (HEPA)
  • Layers of activated charcoal cloth with a special impregnation against acid gases
  • Soft inner pad of non-woven material


  • Approximate (package) dimensions: 19x15x4 cm.
  • Approximate (package) weight: 190-200 gr.

Filter Performance :

Chemical Concentration (mg/m3) Flow Rate (Litre/min) Breakthrough Time (minutes)
Cyanogen Chloride (CK) 100 30 > 15
Dimethyl Methyl Phosphorate (DMMP) 250 30 > 15
Aerosol Filter Efficiency (%) Air Flow Resistance (Pa) Flow Rate (Litres/min)
NaCI (salt) 99.97 117 95


  • Defense/ Law Enforcement Agencies/ Emergency services



Cases and pouches for the storage of Duram Emergency Escape Masks.

Duram Chembayo