Tinplate Split-Type Mason Jar Screw Lids 70mm Regular Mouth Leakproof Food Canning Packaging
Product Description:
Upgrade your food processing and glass jar packaging lines with our premium Tinplate Split-Type Screw Lids designed for regular and wide-mouth Mason jars.
Crafted from high-grade, corrosion-resistant tinplate and fitted with a food-grade rubber sealing ring, this two-piece closure system ensures a 100% airtight and leakproof seal during hot filling, water bath canning, and vacuum preservation.
Built for structural durability and repeated opening, these split screw caps prevent localized deformation and maintain sealing integrity across multiple uses.
Ideal for commercial food processors, beverage manufacturers, private-label brands, and wholesale packaging distributors seeking reliable, food-safe secondary closure solutions.
Specifications Checklist
| Category | Specification Item | Detailed Description & Examples |
|---|---|---|
| Neck Type | Thread Type | Continuous Thread (Screw Finish) for Standard Mason Jars |
| Basic Dimensions | Neck Finish | 70/450 (Regular Mouth), 86/450 (Wide Mouth) |
| Diameter | 70mm, 86mm (Custom diameters available upon request) | |
| Height | ~15mm (Standard split band height) | |
| Material Properties | Material | Tinplate with food-grade anti-rust lacquer coating; superior rigidity, heat resistance, and structural stability |
| Liner | Food-Grade Rubber Sealing Ring; BPA-free, high elasticity, airtight & liquid-tight under vacuum pressure | |
| Functional Features | Feature | Split-Type (Two-piece band & disc), Reusable, Airtight, Leakproof, High-Temperature Resistant (Hot-fill suitable) |
| Surface Finish | Food-safe varnish, Matte, Glossy, Clear Lacquer, Vintage Gold/Silver Plating | |
| Color & Customization | Color | Standard Silver/Gold; Custom Pantone Colors supported for bulk production |
| Logo/Print | Lithographic Printing, Silk Screen Printing, Offset Printing, Embossed/Debossed Logos on top discs | |
| Logistics & Packing | Packing | Bands and discs packed separately in export-grade cartons with inner PE protection; Palletized with stretch wrap |
Applications
Commercial Food Processing & Canning: Bulk sealing for industrial jams, sauces, hot condiments, honey, and pickled goods.
Beverage & Craft Brew Sector: Suitable for commercial cold brew coffee, fermented drinks, juices, and specialty dairy packaged in glass jars.
Foodservice & Institutional Supply: Secure, airtight storage and multi-use handling for commercial kitchens and bulk ingredient suppliers.
OEM/ODM Private Labeling & Packaging Wholesale: Premium closure solutions for branded retail food lines, artisanal gift sets, and custom packaging catalog distribution.
Product Usage & Handling Notes
Primary Seal vs. Reusability: The inner sealing flat disc with rubber compound is optimized for initial thermal and vacuum processing. For repeated commercial vacuum hot-filling, replacing the inner disc is recommended to maintain optimal sealing performance, while the outer screw band is fully reusable.
Corrosion Prevention & Care: Although coated with protective food-safe lacquer, prolonged exposure to highly acidic or salty environments may pose oxidation risks at exposed metal edges. Ensure lids are thoroughly dried after washing or liquid immersion.
Thermal Processing Limits: Observe recommended temperature limits depending on specific processing methods) to prevent degradation of the rubber sealing ring or protective inner coating.
Torque Control on Automatic Capping: Ensure automated capping machines apply balanced torque to the screw bands to achieve proper vacuum seal formation without over-compressing the rubber ring.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.