Valve Plugs

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O2 Curve Exhalation Valve Plugs allows you to protect yourself, and those around you as well.

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SKU: NI1871 Category:
  • The flexible silicone plugs seal the O2 Curve exhalation valves to create bidirectional filtration. We recommend using the Valve Plugs in combination with the Max Air Filters for improved breathability.
  • Wearing a respirator protects you against the exhaled airborne droplets of those around you – installing the new O2 Curve Exhalation Valve Plugs allows you to protect yourself, and those around you as well.
  • Upgrading your O2 Curve with Valve Plugs makes the product safe for travel, and adherent to airline mask guidelines.

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Why buy O2 Curve Mask


Best In Class Filtration

  • Filters 95% of PM2.5 particles
    • Road & construction dust
    • Lead
    • Bacteria
  • Replaceable electrostatic filters
  • Filters last up to two weeks
  • Highly breathable
  • Eyewear compatible
  • Soft silicone works with facial hair

Comfort & Style

  • Japanese medical grade silicone creates a comfortable seal
  • Flexible seal is suitable for facial hair
  • Useable with glasses or goggles
  • Ultra-soft ear loop design for minimal interference with hair
  • Outer shells can be swapped
  • Lightweight design is comfortable during extended use

High-Flow Air Vent

  • High flow rate for easy breathing during physically demanding activity
  • Passed Nelson LabsTM
  • Valve test
  • Inhalation/exhalation test


  • Fully washable
  • Submersible
    • can withstand boiling temperatures for sanitation purposes
  • Only the filter needs to be replaced


  • Commuting
  • Exercising
  • Sports
  • Disaster relief
  • Flu or Virus outbreaks
  • Allergy prevention

Replaceable Filter

  • Quickly replace disposable filters
  • Highly breathable filter membrane
  • 99.99% Virus / Bacteria Filtration Efficiency
  • Passed Nelson LabsTM inhalation/exhalation test

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