Airtight Seal is an upgrade for the Power Armor Helmet.
This module is installed in the Power Armor Tinker Table and requires the following items:
- Glass x 1
The Airtight Seal lets players wear power armor helmets instead of an Oxygen Mask, though still requires oxygen gear and tanks. This allows players to wear power armour in space.
The airtight seal only works in space and is ineffective under water (see the Water Electrolyzer for underwater breathing).