The "Expando" is a trade name for "Expandable polyester braid sleeving".
http://cableorganizer.com/expandable-sleeving/
Braided sleeving comes in many materials, and is sometimes flame resistant/retardant. Among the many variants is the highly desirable "Clean Cut" (or Kleen-Kut).
Searches on the incomplete part numbers around the lab have revealed that the trade name is presently owned by "Bentley-Harris", which is in turn owned by "Federal Mogul".
http://cableorganizer.com/Bentley-Harris/
http://www.federalmogul.com/Federal-Mogul/Templates/Template_D1.aspx?NRMODE=Published&NRNODEGUID={74CEDC39-9765-4BB3-9FAE-7BA24464AC8A}&NRORIGINALURL=/en/OETechnology/VehicleSafety-Protection/SystemsProtection/Aerospace-Defense/Abrasion-bundling/&NRCACHEHINT=Guest&Tab=Products
