'Stasis field is a field within which an object (or even a person) remains unaffected by the passage of time, even for billions of years.
There are at least two types of stasis fields: the most usual is a protective emergency field without controls, but is triggered automatically in times of danger.
The other type is a protective seal and usually has controls.
The stasis fields have particles whose physical properties prevent one field from existing inside another. Precedence is taken by the larger field.
Stasis fields have a perfectly reflective, shiny surface nearly invulnerable to outside damage.
Stasis fields are also known as Slaver Stasis Fields as they were developed by the Tnuctipun during the Thrint Empire. Significant technological advances have been found in such ancient containers.