Lug Lids are metal twist closures designed with interrupted threads (lugs) that engage with matching lugs on glass jar finishes. They are widely used in food packaging because they provide strong, reliable sealing with a short turning angle. When combined with heat or vacuum processing, lug lids create a tight, secure seal that helps preserve freshness and extend shelf life.
Compared with continuous-thread screw lids, lug lids require less rotation to open and close while maintaining excellent sealing performance.
Key Features
Specifications
Part
Details
Product Type
Lug Lid (Twist-Off Lug Closure)
Material
Tinplate / Metal
Closure Type
Lug / Interrupted Thread
Seal Type
Lined Seal (PVC-free options available)
Opening Method
Twist-Off
Compatibility
Glass jars with lug finish
Reusable
Limited (process dependent)
Application
Food packaging, hot-fill, vacuum sealing, commercial use
Advantages
Lug lids provide strong and reliable sealing with minimal rotation, making them faster to apply and easier to open than continuous-thread screw lids. They are well suited for hot-fill and vacuum sealing processes, creating a secure seal after cooling that supports long-term food preservation. Compared with snap-on and plastic lids, lug lids offer better leak resistance, higher heat tolerance, and greater sealing stability during storage and transport. Their metal construction with a sealing liner ensures consistent performance, making them a proven choice for commercial and industrial food packaging applications.
Support
Established in 2014, Xuzhou Warlter Packaging Products Co., Ltd. is a professional manufacturer of glass packaging solutions and easy-open lid systems. Based in Xuzhou, China, we provide food-grade glass jars, bottles, metal lids, bird’s nest jars, mason jars, carafes, and aluminum cups for global markets.