Aluminum Bottle Caps – 8011 ROPP Caps & Vial Seals Supplier

Aluminum bottle caps are widely used in wine, spirits, water, soft drinks, edible oil, food and pharmaceutical packaging.

Chalco manufactures a full range of aluminum screw caps, ROPP caps, vial seals, twist-off lids and pull-ring caps made from 8011 aluminum closure sheet.

We can supply ready-to-use aluminum bottle caps as well as 8011 aluminum cap stock, so both bottlers and cap manufacturers can source from one reliable partner.

Aluminum bottle caps we supply (product range)

Chalco supplies aluminum bottle caps made from 8011 aluminum closure sheet for wine & spirits, water & soft drinks, food jars and pharmaceutical vials.

Our range covers standard ROPP caps, screw caps, vial seals, twist-off lids and pull-ring caps in common diameters from 18–38 mm, designed for deep drawing, smooth running on high-speed capping lines and compliance with FDA/EU food-contact regulations.

ROPP Aluminum Caps for Wine & Spirits

We supply 30 × 35 mm, 30 × 60 mm, 31.5 × 44 mm and other ROPP aluminum screw caps for wine and spirits bottles, with custom colors, logo printing and tamper-evident bands.

Aluminum Caps for Water & Soft Drinks

28 mm and 38 mm aluminum screw caps are used for mineral water, flavored water and carbonated drinks, and run smoothly on high-speed capping lines with reliable sealing.

Aluminum Vial Seals for Pharmaceuticals

We produce aluminum vial seals and flip-off caps for 13 mm, 20 mm and 32 mm injection vials in standard colors such as gold, yellow, red, blue and black.

Twist-off Lids, Pull-Ring Caps and EOE Lids

We supply aluminum twist-off jar lids, pull-ring caps and lacquered easy-open end lids with good sealing, corrosion resistance and attractive shelf appeal.

8011 aluminum closure sheet – key specifications for caps

Chalco uses 8011 aluminum closure sheet as the core material for most aluminum bottle caps. The alloy offers a good balance of strength, elongation and deep-drawing performance, with a low earing rate to reduce scrap for long caps such as 30 × 60 mm ROPP caps.

Thickness and width tolerances, flatness and camber are controlled to ensure stable performance on coating, printing and deep-drawing lines. Coatings are tested for boiling resistance (for example 121 °C for 30 minutes) and chemical resistance to typical filling media.

For full mechanical properties, tolerances and chemical composition of 8011 aluminum sheet, strip and foil for caps, please refer to our Aluminum Closure Sheet Coil page.

Customization options for aluminum bottle caps

All aluminum bottle caps can be customized in size, height, color, printing and liner systems. We support top and side printing, hot stamping and anti-counterfeit designs to help your brand stand out on the shelf.

• Size range: typical diameters from 18–38 mm and heights from 12–60 mm; custom sizes can also be developed according to your bottle design.
• Surface finish: glossy or matt finish, knurling, embossing and debossing for better grip and premium look.
• Colors: standard colors for common applications and fully customized colors matched by Pantone number or physical sample caps.
• Printing & decoration: top and side printing, multi-color logos, hot stamping, batch codes and anti-counterfeit marks.
• Liner systems: PE foam liners, Saranex®/Sarantin® liners, induction seal liners and pharma-grade rubber discs for vial seals, designed to match your product and filling conditions.
• Packaging: bulk packing, tray packing and shrink-wrapped pallets to suit manual or automatic cap-feeding equipment.

Popular sizes of aluminum bottle caps

Aluminum bottle caps are a standard option for many applications, including alcoholic beverages, soft drinks, mineral waters, edible oil and pharmaceuticals. Aluminum closures are available in different colors and designs, with logoed caps and fully customized caps also available.

Bottle caps can be shipped in bulk to anywhere in the world. Many common sizes are kept in stock so delivery can be timely and smooth. We are always ready to help you choose or recommend the best product for your specific use. If you have any questions or need assistance, please contact us via email:

Tinplate screw caps are also available when required for specific applications.

18.2 × 12.2 mm Aluminum Cap

19.8 × 12.4 mm Aluminum Cap

22.4 × 15.2 mm Aluminum Cap

38.6 × 17.8 mm Aluminum Cap

28 mm Aluminum Cap

28.7 × 31.9 mm Aluminum Cap

30 × 35 mm Aluminum Cap

30 × 60 mm Aluminum Cap

31.5 × 44 mm Aluminum Cap

Aluminum cap for Injection bottle

Pull ring cap

Tinplate Screw Cap

Aluminum bottle cap structure and liner options

A reliable aluminum bottle cap is not only the metal shell. Shell structure, liner material and tamper-evident design must match your bottle neck, filling product and sterilization process. Chalco supplies both finished caps and 8011 cap stock with structure optimized for your application.

• Cap shell – Deep-drawn 8011 aluminum shell with knurled skirt and optional pilfer band for roll-on pilfer-proof (ROPP) caps.
• Top panel – Flat or slightly domed surface for brand logo, production code and hot stamping.
• Side wall & threads – Rolled threads and knurling ensure smooth capping, correct torque and easy consumer opening.
• Liner system – PE foam, PVDC/Saranex, induction foil or rubber discs provide the real seal between cap and bottle mouth.

Below are common liner options we can supply or match, and their typical use cases. If you are not sure which liner to choose, send us your bottle drawings and product information – our engineers will recommend a suitable system.

Key features of 8011 aluminum bottle caps

Compared with general metal caps, Chalco's 8011 aluminum bottle caps are designed for modern high-speed filling lines and long shelf-life requirements. They combine secure sealing, brand presentation and recyclability, helping you reduce complaints and improve line efficiency.

• High sealing performance – Deep-drawn 8011 aluminum shell plus matched liner system keep oxygen, moisture and CO₂ under control, reducing leakage and oxidation risks.
• Tamper-evident safety – ROPP and pilfer-proof designs show clearly whether the bottle has been opened, helping protect brand reputation and consumer safety.
• Good formability for long caps – 8011 closure sheet with low earing rate is suitable for 30 × 60 mm and other long wine caps, with stable deep-drawing performance.
• Lightweight & corrosion-resistant – Aluminum caps are lighter than steel closures and resistant to common food and beverage media, helping to reduce transport cost and rust complaints.
• Easy branding and decoration – Top and side printing, hot stamping and embossing make your product stand out on the shelf and support premium positioning.
• Fully recyclable – 8011 aluminum is 100% recyclable, helping brand owners meet their sustainability targets and packaging regulations.

Typical applications of Chalco aluminum bottle caps

Chalco aluminum bottle caps and 8011 cap stock are suitable for a wide range of products. The table below shows typical application fields, cap types and what you can expect in daily use.

Sealing liners and tamper-evident features

The performance of aluminum bottle caps depends not only on the metal but also on the liner system and tamper-evident features. Chalco offers different liner and band designs to match your product, filling conditions and brand requirements.

ROPP aluminum caps for wine & spirits

• Standard ROPP caps are supplied with a tamper-evident breakaway band that clearly shows if the bottle has been opened.
• Liners are designed for wine and spirits, providing tight sealing, controlled oxygen transmission and long shelf life in horizontal or vertical storage.
• Compatible with common MCA neck finishes and ROPP capping machines for reliable thread formation on high-speed lines.

Aluminum caps for water & soft drinks

• Liner systems are optimized for still and carbonated drinks to prevent leakage, CO₂ loss and paneling during transportation.
• Caps are designed to run smoothly on high-speed filling and capping lines with stable application and removal torque.
• Options for lightweight designs help reduce packaging cost while maintaining sealing performance.

Aluminum vial seals for pharmaceuticals

• Aluminum vial seals are used together with pharma-grade rubber stoppers and flip-off buttons to provide secure sealing and easy opening in hospitals and laboratories.
• Available in standard 13 mm, 20 mm and 32 mm sizes with color coding for product identification and production line management.
• Coating and printing systems are selected to withstand sterilization and handling without flaking or discoloration.

Twist-off lids, pull-ring caps and EOE lids

• 8011 aluminum sheet with food-grade lacquer provides good corrosion resistance in contact with sauces, pickles and other aggressive foods.
• Coatings are tested for boiling and pasteurization conditions to ensure that adhesion and color remain stable during processing.
• Easy-open and pull-ring designs give consumers convenient access while maintaining product safety and shelf appeal.

How to specify your aluminum bottle caps or 8011 cap stock

To help us recommend the most suitable aluminum caps or 8011 cap stock and prepare an accurate quotation, please provide as much of the following information as possible:

• Product and application: still wine, sparkling wine, spirits, mineral water, carbonated soft drink, edible oil, sauce, injection vial, etc.
• Bottle type and neck finish: glass or PET bottle, neck size and finish (for example 30 × 60 mm MCA3, 28 mm CSD finish, 20 mm vial).
• Cap type: ROPP screw cap, aluminum screw cap, vial seal / flip-off cap, twist-off lid, pull-ring cap or easy-open lid.
• Liner and sealing requirements: type of liner (PE foam, Saranex, PVC / PVC-free compound, rubber stopper, induction liner) and any special requirements such as CO₂ retention or hot filling.
• Printing and color: body and top color (Pantone No. if available), logo position, hot stamping or other decorative effects.
• Quantity and delivery: estimated annual demand, trial order quantity, preferred delivery terms and destination port.
• For 8011 cap stock: required thickness, strip or sheet width, temper, coating system and target coil weight to match your coating and stamping lines.

With this information, our engineer team can quickly match your current caps or design a new solution based on 8011 aluminum closure sheet, and provide technical support from trial samples to mass production.

Ready to discuss your project? Send us your bottle drawing, cap size and annual demand – our engineer team will review and reply with a proposal.

Why choose aluminum bottle caps from Chalco?

• Integrated supply: we produce both 8011 aluminum closure sheet and finished aluminum bottle caps, so material quality and cap performance are controlled from the source.
• Trusted by leading closure companies: we cooperate with well-known partners such as Guala Closures, Nippon Closures, CSI Closures, Herti, Mala Closures and Federfin Tech, which validates our capability in quality, reliability and innovation.
• Food-contact compliance: Chalco's aluminum sheets for closures comply with US FDA and European directives for aluminum in contact with food, beverages, cosmetics and pharmaceuticals.
• Stable forming performance: low earing rate, good flatness and consistent lacquer adhesion help reduce scrap rate and ensure a high cap output per ton of material.
• Global export experience: we regularly ship aluminum caps and closure sheet worldwide and can provide complete documentation including CO, MTC and third-party inspection reports when required.

Order information – MOQ, lead time and samples

• Production MOQ: for new production, the minimum order quantity is 500 kg per size and design. Stock items can be purchased by piece or in small quantities.
• Samples: free standard samples are available for most products. Freight can be collected or charged at cost. Custom printed samples can be produced after artwork confirmation.
• Lead time: lead time depends on cap size, liner system and printing design. We start production immediately after order and artwork are confirmed to help you meet your filling schedule.
• Trade terms: we support common trade terms such as FOB, CIF and CFR and can ship from main Chinese ports to your destination.
• How to inquire: please tell us your bottle type, cap size, annual demand and preferred liner type. Our engineer team will recommend the most suitable aluminum caps and 8011 cap material for you.

Tell us your bottle type, cap size, annual demand and preferred liner type – our engineer team will recommend the most suitable aluminum caps and 8011 cap material for you within 24 hours.

For cap manufacturers – 8011 closure sheet supply

If you are a cap manufacturer with your own stamping and lining lines, Chalco can supply you with 8011 aluminum closure sheet, strip and coils. Standard tempers include H14, H16, H18 and H19, with thickness typically from 0.15–0.30 mm for ROPP caps, vial seals, twist-off lids and easy-open ends.

You can use our coil stock directly for coating, printing and deep drawing on your existing production lines.

Learn more: Aluminum Closure Sheet Coil

From 8011 closure sheet to finished aluminum caps

Unlike traders who only supply assembled caps, Chalco controls the whole chain from 8011 closure sheet to finished aluminum bottle caps. This helps you get stable quality on your filling lines and reduces the risk of unplanned stoppages.

• Cap stock production – 8011 closure sheet and strip are cast, rolled and slit with tight thickness and width tolerances, low earing rate and good flatness for deep drawing.
• Stamping and deep drawing – Round blanks are punched and drawn into caps with controlled wall thickness and height, suitable for 30 × 35 mm, 30 × 60 mm, 31.5 × 44 mm and other sizes.
• Surface coating & printing – Food-grade lacquer, color coating, side/top printing and hot stamping are applied according to your brand requirements.
• Liner application – Foam, barrier or induction liners are inserted or molded to meet your sealing and sterilization conditions.
• Tamper-evident and knurling forming – Pilfer bands, bridges and knurling are formed to match your capping equipment and torque specifications.
• Quality control – Online checks include cap height, thread accuracy, coating adhesion, cleanliness and earing, helping ensure smooth performance on high-speed lines.

Whether you purchase finished aluminum bottle caps or 8011 cap stock for your own cap production lines, our integrated process helps you get consistent sealing performance and fewer line adjustments.

Partners

As an aluminum materials company, we are proud to collaborate with renowned partners such as Guala Closures, Nippon Closures, CSI Closures, Herti, Mala Closures and Federfin Tech. The selection of these partners validates our exceptional capabilities in terms of quality, reliability and innovation.

Chalco's aluminum sheets for closures comply with US FDA and European directives regarding the use of aluminum that comes into contact with food, drinks, cosmetics and pharmaceuticals.

Frequently asked questions about aluminum bottle caps and safety

What types of aluminum bottle caps does Chalco supply?

Chalco supplies a full range of aluminum bottle caps made from 8011 aluminum closure sheet, including ROPP screw caps for wine and spirits, aluminum screw caps for water and soft drinks, vial seals and flip-off caps for pharmaceuticals, as well as twist-off lids, pull-ring caps and lacquered lids for easy-open ends.

What is 8011 aluminum closure sheet and why is it used for caps?

8011 aluminum closure sheet is a specialized alloy for caps with good strength, elongation and deep-drawing performance, plus a low earing rate and good flatness. These properties are important for long caps such as 30 × 60 mm ROPP caps and for smooth running on high-speed coating, printing and capping lines.

Combined with food-grade lacquers it meets FDA and EU food-contact regulations for wine, water, soft drinks and pharmaceutical packaging.

Can Chalco supply both finished aluminum caps and 8011 cap stock?

Yes. Chalco can supply ready-to-use aluminum bottle caps for bottlers as well as 8011 aluminum closure sheet, strip and coils for cap manufacturers with their own stamping and lining lines, so both bottlers and closure producers can source from one integrated supplier.

What is the minimum order quantity and can I get samples of aluminum caps?

For new production, the typical minimum order quantity is 500 kg per cap size and design. Many common sizes are kept in stock and can be supplied in smaller quantities. Free standard samples are available for most products, with freight collected or charged at cost, and custom printed samples can be produced after artwork is confirmed.

Are bottle caps made out of aluminum?

Yes, many bottle caps are made from aluminum, especially ROPP screw caps for wine and spirits, caps for water and soft drinks, vial seals for pharmaceuticals and twist-off lids for food jars. Aluminum caps are lightweight, easy to deep draw and print, and can be recycled together with the bottle or can, which makes them a popular choice for modern packaging.

Are metal bottle caps worth anything?

Metal bottle caps do have recycling value, especially when they are collected in quantity as aluminum or steel scrap.

Individual caps are small and usually not accepted alone, but many brands and recyclers encourage collecting caps together with bottles so the metal can be recovered. For bottlers and cap manufacturers, choosing recyclable aluminum caps helps improve the overall sustainability of the packaging.