密みっ封ぷう

noun, noun or participle which takes 'suru', transitive verb

hermetic sealing; sealing airtight

Used for sealing containers, packages, or spaces to make them airtight or watertight. Common in food packaging, industrial contexts, and everyday storage.

• 開かい封ふう後ごは密みっ封ぷう容よう器きに入いれて保ほ存ぞんしてください。

  After opening, please store in an airtight container.

• 食しょく品ひんを密みっ封ぷうして冷れい凍とう庫こに入いれた。

  I sealed the food airtight and put it in the freezer.