Sealant Mesh (also known as a compress) is a type of Covenant medical technology.[1] The mesh is described as a thin sheet of bronze-colored material that, when properly affixed, will form a partial seal over wounds (allowing air to escape as the wounded person exhales but keeping it in when the person inhales). The mesh also contains a coagulant that will help keep the wounded person's blood inside their body.[1]

Sealant mesh is a temporary measure at best and, if given the time, most Covenant soldiers prefer to use an Automated Surgery Suite.[2]

Sealant mesh is one of the medical tools contained in a Portable Aid Station. It was first used by Maccabeus after the Jiralhanae's first contact with the humans on Harvest.


  1. 1.0 1.1 Halo: Contact Harvest, page 258
  2. Halo: Contact Harvest, page 259