This liner is a general-purpose liner with compressible PE foam that creates a stable seal for many products.
A pressure sensitive foam liner has an adhesive side that sticks to the container when pressure is used to secure the closure onto the container. When the closure is removed, the pressure sensitive liner remains on the top of the container.
Heat induction liners have several layers that include pulpboard, wax, foil, and a polymer coating. When passed through an induction machine, the heated foil melts the wax and polymer, creating a hermetic seal with the container when solidified.
A plastic gasket on the inside of a metal closure that creates an airtight seal with the container when properly heated and cooled.
