The container needed to be airtight to preserve the food
Make sure the lid is airtight to prevent leaks
The scientists created an airtight chamber for their experiment
The submarine had an airtight seal to protect the crew
His arguments were airtight and impossible to refute
Hey, I'm trying to decide how to best store my homemade cookies. Any suggestions?
Ooh, that's a tough one! You definitely want something that keeps them fresh. I'd go for a container with an airtight seal to prevent them from going stale quickly.
Great idea! Have you ever had a container that *seemed* airtight, but wasn't? What did you do to fix it?
The container needed a seal that prevented any air from entering or escaping to preserve the food
The food required a completely sealed container
The packaging was designed to be impervious to air, protecting the contents
To keep the food fresh, it had to be stored in something that wouldn't let air through