Sealant foam

Sealant foam is a reactive material designed by humans to instantly seal breaches between a pressurized space and a vacuum. It is used between the double hulls of space stations such as Tiara to fill small hull breaches made by micrometeorites or other space-borne debris. The foam is also used in compartmentalized vacuum suits to protect the wearer from breaches. The foam is yellow in color, and often stored in barrels.

List of appearances

 * Halo: Contact Harvest