The Tamper Evident caps with a drop band plug are a perfect solution for beverages that require tamper evident seal. This 38-400 black polypropylene (PP) plastic tamper evident closure has smooth top and ribbed sidewalls for a strong grip. This cap is linerless. When cap is unscrewed from the bottle, the tamper-evident band will break, alerting you to compromised product. The Plug Seal design ensures a tight fit and leak proof package. This closure is a great choice when packaging liquor/spirits and other non-carbonated beverages. Note: Not to confuse Unlined caps with Linerless caps, unlined caps are simply regular continuous thread caps with no liner in them. With these caps, the seal is different and not often suitable for liquids but suitable for products, like powders or tablets. On the other-hand Linerless closures can give you both a quality sealing system and a fit for dispensing your product from the bottle or jar.