What is it?

If you purchased a security-sealed case for Orthrus and need to perform a firmware update, it is necessary to break the seals to do so (this is the whole point of the seals, of course). If you wish to re-seal Orthrus after performing an update, these are the same seals. You'll get a pair of seals with different serial numbers. As long as you take note that the serial numbers of the seals on your unit do not change without your knowledge, you can be confident the case has not been opened, which further means that the unit has not been erased and re-flashed.

These are FIPS 140-2 certified, serialized labels with holographic printing. The manufacturer certifies that the serial numbers are never repeated. After the adhesive has cured for an hour, attempting to remove a seal permanently and visibly damages it.