07:27, December 9, 2013 (UTC)
2013-04-23 18.01.33

Open view of Oxygen Sealer system including 1 collector, needs about 5 to work well or one with a large amount of leaves nearby.


The Oxygen Sealer is a machine added by Galacticraft. Its purpose is to seal and pressurize an enclosed area so the player may breathe without breathing equipment. bug: when you have diagonal blocks on certain technic modpacks does not work.


First get an Oxygen Collector up and running, then connect it to the right side of an oxygen sealer (all pipes through walls must use sealable pipes to keep the room sealed) and place a battery in the sealer or supply it with energy on the right side, then right click the sealer and click enable seal, the area must be completely closed off or have the doorways sealed with an Airlock doorway for the oxygen to seal. The Oxygen Sealer & Collector should be placed on a floor or wall to function properly. Varying amounts of oxygen input will be required to seal an area based on the volume to be sealed. The vent of the sealer must be exposed to the air or it will not work. If it not sealed or It's large area , the GUI will say Area too large/Unseal

One sealer can seal roughly 800 blocks of space. Multiple Oxygen Sealers may be required if the area is large enough. If your area requires multiple Oxygen Sealers, you don't need to spread them out throughout the area, they can be next to each other and still seal the entire area.

Torches will burn out if there is no oxygen, and they'll reignite when oxygen is restored.

2013-04-23 18.04.47

inside after I closed the room and sealed it

WARNING: Certain blocks and objects are not airtight, and therefore will not create an enclosed space that can be sealed!

Some items that will not seal: 

  • Redstone Conductive Pipe
  • Redstone Energy Cell
  • Redstone Energy Conduit
  • Hardened Glass
  • Reactor Glass
  • Buildcraft Tanks
    Its GUI

    GUI of the Oxygen sealer . If It's not sealable or It's to big of an area , It will say Area too big/unsealed

  • Buildcraft Pipes
  • Doors
  • Sponge
  • Dynamic Glass
  • Reinforced Glass
  • Clear Glass
  • Metal Posts
  • Glowstone Illuminator
  • Refined Glowstone
  • Activated Pistons
  • Iron Bars
  • Computers
  • Monitors
  • Networking cables
  • Strengthened Glass (Railcraft Strengthened Glass WILL seal.)
  • Water and Lava
  • Thickened Glass (including all variants)
  • Mekanism Gas Tank BUT Mekanism pump , tank and fluidic plenisher are seal
  • Mekanism Cable
  • Mekanism Pipe
  • Mekanism Solar Generator
  • Mekanism Plastic barrier and Vanilla fence
  • All Extra Utilities microblock
  • Extra Utillities Drum
  • Extra Utilities Ender Flux Crystal
  • Extra Utilities pipe
  • Extra Utilities Ethereal Glass
  • Extra Utilities Ineffable Glass
  • AE2 wire
  • AE2 Charger
  • Carpenter's Blocks Mod Blocks
  • Malisis' Doors Forcefield

Or If you do not want to worry about having a sealed base you can use Oxygen Bubble Distributer to make a Breathable sphere instead.