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Metal Caps for Glass Jars

Metal Caps for Glass Bottles, Jars & Jugs

Metal Caps for Glass ContainersThe Cary Company offers a wide variety of metal caps that are compatible with glass bottles, jars and jugs. These metal closures are FDA compliant and available in aluminum or electrolytic tinplate (tin-coated steel), providing durable, reliable sealing solutions for food, beverage, body care, essential oil, pharmaceutical and specialty packaging applications. Many of our metal caps feature polished finishes and are available with multiple liner options, including Pulp & Poly, Pulp & Poly-Vinyl, Pulp & Aluminum Foil and Plastisol, allowing you to match the right closure to your specific product requirements. Additional colors, sizes and liners are available upon request to support your unique packaging needs.


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What's the Difference Between Aluminum & Tinplate Metal Caps?

Our metal caps for glass containers are available in two primary materials, each offering distinct advantages. Aluminum caps are lightweight, corrosion-resistant and commonly used for premium products such as beverages, essential oils and specialty foods. Tinplate caps, made from electrolytic tinplate (tin-coated steel), provide excellent strength and durability, making them ideal for applications requiring stronger sealing performance. Both material options are FDA compliant and can be paired with various liner types to match your specific product compatibility and preservation needs.​ 

Which Liner Type Should I Choose for My Product?

Selecting the right liner depends on your product's chemical composition and packaging requirements. Common liner options for our metal caps include:

  • Pulp & Poly: versatile option for dry goods and general-purpose applications
  • Pulp & Poly-Vinyl (PV): provides enhanced moisture resistance
  • PE Foam: offers good resistance to acids, alcohol, oils and aqueous products
  • Pulp & Aluminum Foil: offers barrier protection for sensitive products
  • Plastisol: heat-activated liner that creates a tight seal, commonly used for food and beverage applications

Can I Use These Caps for Hot-Fill Applications?

Certain metal caps and liner combinations are designed to withstand hot-fill processes commonly used in food and beverage production. Hot-fill compatibility depends on both the cap material and the liner type selected. For example, Plastisol-lined caps are often used in hot-fill applications because the liner is heat-activated and helps create a hermetic seal as the product cools. We recommend confirming the temperature tolerance and liner specifications for your application before use.

Why Choose The Cary Company?

With over 130 years of industry expertise, The Cary Company is a trusted partner for packaging solutions across food, beverage, pharmaceutical and specialty industries. We offer an extensive selection of metal caps for glass containers, with multiple material options, sizes and liner types in stock. Our competitive bulk and wholesale pricing ensures you get the best value, whether you're ordering a single case or planning large-scale production runs. Our knowledgeable customer service team is always ready to assist you in choosing the right metal cap and liner combination for your application and answering any questions you may have. Call us now at 630.629.6600!​

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