The 68WLP1 is an 18mm one piece top-tabbed induction seal with foam backing that features an easily opened clean peel design for use on HDPE containers. This liner features a built-in center pull tab for ease of grip when peeling liners off. Heat induction seal (HIS) liners are a popular choice when an airtight seal is needed. The "Clean Peel" liners provide an aggressive bond with clean peel removal but are not tamper-evident. An induction machine is required to apply the liner. Unlike pressure sensitive liners, these are recommended for use with liquid products.