sealed system
Nothing escapes it
A sealed system is a mechanism designed to prevent exchange with its environment—no material enters or leaves.
In thermodynamics, it describes a theoretical container where energy but not matter can cross boundaries.
Practically, the term applies to refrigeration units, hydraulic systems, or any apparatus where contamination or leakage would cause failure: The AC uses a sealed system that shouldn't need refrigerant added.
- gasketMechanical leak preventer
- hermeticImpenetrably closed off
- airtightImpervious to atmosphere
- vacuumAbsence of matter
- tamper proofResistant to unauthorized changes
impermeable · unbreachable · cap · lid · isolation · escape room · pressure · container · bubble wrap · washer · quarantine · laboratory · calorimeter · refrigeration · vacuum chamber · sandboxing · firewall · packing