Gas mask

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Gas mask

Gas mask

A flexible mask worn over the face with an embedded air filter. It dramatically reduces exposure to pollution through the lungs, but does not protect the skin on the rest of the body.
It prevents tox gas irritants from entering through the eyes and mouth.

Base Stats

Tech Level
Market Value
106 Silver [Note]
0.4 kg


Insulation - Cold
°C (0 °F)
Insulation - Heat
°C (0 °F)
Armor - Sharp
Armor - Blunt
Armor - Heat
Head, Left Eye, Right Eye, Left Ear, Right Ear, Nose, Jaw


Crafted At
Machining table
Required Research
Work To Make
6,000 ticks (1.67 mins)
Resources to make
Steel 20 + Chemfuel 20

The gas mask is a piece of apparel added by the Biotech DLC.


Gas masks can be crafted at a Machining table once the Machining research project has been completed. They require Steel 20 Steel, Chemfuel 20 Chemfuel and 6,000 ticks (1.67 mins) of work.


Gas masks increase Toxic Environment Resistance by +80%, causing tox gas, toxic fallout, rot stink, and pollution to be 20% effective. It does not protect from diseases, which are not contagious between pawns in RimWorld, nor does it prevent toxic buildup from attacks such as the cobra's bite. Quality does not affect this resistance.

The gas mask does not count as clothing for pawns with the nudist trait or with pro-nudity ideoligions.Content added by the Ideology DLCDespite this, it does still count as clothing coverage for pawns who prefer not being naked

Armor and insulation bug[edit]

Gas masks have armor and insulation values defined, but only as stuff effect multipliers. These require a material to complete the equation and actually produce a final value. As the gas mask is not stuffable, this is impossible to see in the game.

This results in the gas mask offering no armor or insulation at all.


For many purposes, such as against rot stink, a face mask's 50% toxic resistance is sufficient. As face masks don't cover the head, simple helmets and flak helmets can be used alongside it. That said, unlike the face mask, the gas mask prevents the immediate effects of tox gas on sight, breathing, and pain, in addition to the effect of reducing toxic buildup more than a face mask.

The gas mask offers absolutely no protection. The only positive effect of quality is a lowered deterioration rate.

Stats table

  • Feature Toggle
    Gas mask Gas mask Sharp Blunt Heat HP Insulation - Cold Insulation - Heat Market Value
    Awful 0% 0% 0% 80 -0 °C (0 °F) +0 °C (0 °F) 53 Silver
    Poor 0% 0% 0% 80 -0 °C (0 °F) +0 °C (0 °F) 80 Silver
    Normal 0% 0% 0% 80 -0 °C (0 °F) +0 °C (0 °F) 106 Silver
    Good 0% 0% 0% 80 -0 °C (0 °F) +0 °C (0 °F) 133 Silver
    Excellent 0% 0% 0% 80 -0 °C (0 °F) +0 °C (0 °F) 159 Silver
    Masterwork 0% 0% 0% 80 -0 °C (0 °F) +0 °C (0 °F) 265 Silver
    Legendary 0% 0% 0% 80 -0 °C (0 °F) +0 °C (0 °F) 530 Silver

    For the full effects of qualities, see Quality.

  • Version history[edit]