Portable Induction Cap Heat Sealer for Plastic and Glass Bottles ONLY. Not for use with Metallic Bottles. This heat induction sealer is designed to apply an airtight, tamper-evident seal on plastic caps ranging in size from 20 mm to 100 mm. The hand-held unit operates with just a push of the button (yes, it’s that easy). Made specifically for small production needs. It’s powerful, compact and ideal for food, and pharmaceutical products. Can apply up to 20 seals per minute. The digital timer with automatic overheat protection ensures accuracy.