Reusable half-mask respirator

General information

Reusable Half Mask Respirator

General information ​

  • Half masks cover the nose, mouth and chin.
  • They are supplied in different shapes and sizes.
  • This type relies on the wearer's breathing to pull the air through the filter.
  • These masks have inlet and outlet valves, which must be in good condition.
  • Reusable half masks are usually made from a flexible rubber or silicone material.
  • Half-mask respirators are uncomfortable to wear continuously for more than 1 hour.
  • The respirators can be cleaned and used many times, as recommended by the manufacturer.
  • A reusable half-mask can be fitted with particle filters, gas filters, vapour filters or a combination of gas, vapour and particle filters.
  • They are all right for light work (work activity when seated) and medium work rate (work activity involving sustained hand and arm movements, or similar to brisk walking).


  • Fit the straps as recommended.
  • Train users to use the RPE correctly.
  • Select the right size mask for each wearer.
  • Always fit two identical filters to a twin-filter mask.
  • Change used filters at the manufacturer's recommended frequency.
  • Fit-testing for each wearer is required when using this RPE for the first time.
  • Ensure you have the right filter(s) for the substance – particle, gas or vapour, or the required combination.
  • Ensure that wearers check the RPE fits correctly every time, as recommended by the manufacturer.


  • Store in dirty areas between uses.
  • Make DIY modifications to the RPE.
  • Damage or deform the mask when putting it away.
  • Use a damaged respirator – mask, filters, straps or valves.
  • Use in oxygen-deficient atmospheres, for example confined spaces.
  • Use a P1 filter against fume unless recommended by the manufacturer.
  • Get dirt inside the mask, or use solvents to clean the mask, straps or filters.

Find out more​