The phrase "a sealed package" is correct and usable in written English.
It can be used to describe a package that has been securely closed or fastened to prevent tampering or leakage.
Example: "The delivery arrived in a sealed package, ensuring that the contents were protected during transit."
Alternatives: "an unopened package" or "a secured package".
She added that said the university's rich traditions "must not become an immutable bundle passed like a sealed package from one generation to the next".
This chapter discusses various aspects of water in sealed packages which include water related corrosion and circuit failures, and water leaking into a sealed package from the outside environment.
In many cases, it was simply low-cost reinforcements like "strategically placed nails, some small metal connectors and window shutters that created a sealed package," The Post's Patricia Sullivan, Frances Stead Sellers and Emily Wax-Thibodeaux report.
If using a casserole dish, tuck a damp piece of greaseproof on top and cover, if using a roasting dish, sprinkle the overhanging paper with water and fold over and tuck in to form a sealed package.
Thaw meats, poultry and fish in the refrigerator -- never on the counter -- or in the microwave oven or in a sealed package in cold water that is changed every half hour.
If Vladimir Putin gets his way – and he tends to – any book published in Russia that contains "foul language" will soon have to be sold in a sealed package and marked with a warning.
After a while, a window above her opened and a sealed plastic package was thrown down to the ground.
Fleming discovered it: a sealed, notarized package containing a reel-to-reel tape of recordings that Reed had mailed to himself in 1965, as a so-called poor-man's copyright, two years before the release of "The Velvet Underground & Nico".
Make sure the battery comes in a sealed retail package.
For example, SolFocus is making a system that combines the concentrators and cells in one sealed package by employing manufacturing techniques similar to those used to make automobile headlamps.
He caused a sensation when he declared that he had seduced Katherine Doughty and that the sealed package given to Gosford, the contents of which he earlier claimed not to recall, contained instructions to be followed in the event of her pregnancy.
