These clear glass mason jars include 70G gold metal printed plastisol lined caps. The metal caps black print that reads "Button Pops up when Original Seal is Broken." To create a vacuum seal, the glass jar and product must be heated to recommended temperatures, softening the liner. As your product cools, the liner solidifies and creates an airtight seal with the container. Each of the metal caps feature a tamper evident button that pops up after the vacuum seal has been broken.
Jar Size Comparison Info