The clear glass mayo / economy jars are available with 70G gold metal printed plastisol-lined caps. The metal caps are printed in black with the message "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 also feature a tamper evident button that pops up after the vacuum seal has been broken.
Jar Size Comparison Info