The L462H is a black and natural-colored HDPE and LDPE plastic 20-410 twist-open dispensing cap with heat induction seal (HIS) liner. This closure has an orifice opening of 0.115 mm. This closure comes with a heat induction seal (HIS) liner, already placed inside the cap. An HIS liner is a metallic disk that provides an airtight, tamper-evident hermetic seal when an appropriate heat induction sealing process is applied. This liner can work with plastic or glass containers. For more information on heat induction sealing and available machinery, please read our article, How to use HIS liners and a heat induction sealing machine. This cap is made from HDPE, which has limited flexibility and high resistance to heat and cold. This closure fits a container with a 20-410 neck finish. The first number refers to the diameter of the container's opening (in mm). The second number refers to the thread/style/depth of the closure's skirt. Please read 5 seals and how they make perfect liners for your container for more information on liner types.