Tagged with ' ball mason jars'

In the year 1858, John Landis Mason invented and patented the Mason Jars that are now well-known. The Ball Corporation, a company that early on focused successfully on manufacturing glass containers, is responsible for the term Ball Mason Jars being commonly used today. The Ball Mason Jars feature an external thread around the glass opening, to which a metal ring can be screwed. This metal ring presses a separate, disc-shaped steel lid against the edge of the glass. An integrated rubber ring on the underside of the lid ensures a hermetic seal. As nothing can enter or exit, Mason Jars are perfect for preserving food.