HAOMEI Aluminum's 28mm aluminum caps are compatible with most standard PET plastic bottles and glass bottle mouths, offering a versatile and user-friendly option for manufacturers and bottlers. The 28mm caps provide excellent barrier properties, extending product shelf life and ensuring the contents remain in optimal condition from bottling to consumption. Moreover, aluminum is highly recyclable, making these caps a sustainable and eco-friendly choice for environmentally conscious companies.
The 28mm eco-friendly aluminum bottle cap is a food-grade aluminum screw cap, usually made from 3105 or 8011 aluminum alloys, with uniform thickness and smooth surface finish. Aluminum's lightweight and recyclable nature, combined with precise processing, creates a durable, strong cap widely used for mineral water, juice, beer, beverages, and health product bottles.

Specifications of 28mm Aluminum Bottle Cap
| Product Name | 28mm Eco-Friendly Aluminum Bottle Cap | 
| Material | High-purity aluminum alloy (8011-H16 / 3105-H14) | 
| Inner Diameter | 28 ± 0.2 mm | 
| Height Options | 15mm / 18mm / 22mm (customizable) | 
| Surface Treatment | Anodizing / Spraying / Baking paint / Electrophoresis / Silk printing / Laser engraving | 
| Color Options | Silver, gold, black, red, blue, green, or custom colors | 
| Liner Material | PE, TPE, EVA food-grade sealing liner | 
| Opening Method | Screw-on type (tamper-evident ring design) | 
| Sealing Performance | ≥ 0.5MPa, leak-proof | 
| Compatible Bottles | Glass bottles / PET bottles / Plastic bottles | 
| Environmental Standards | Compliant with FDA, EU, RoHS, REACH | 
| Customization Services | Size, color, logo printing, surface treatment | 
| Packaging | Carton + PE inner bag / Custom pallet packaging | 
| Applications | Mineral water, juice, carbonated beverages, etc. | 
| MOQ | 80,000 pcs | 
Why Choose HAOMEI Aluminum 28mm Caps?
- Excellent Sealing Performance: Effectively prevents oxygen ingress and carbon dioxide escape, locking in freshness, carbonation, and flavor from factory to consumer. 
- Easy and Elegant Opening: Classic break-off tamper-evident design (pull-tab cap) provides both security and a satisfying, convenient opening experience, enhancing the drinking ritual. 
- Aesthetic and Customizable: Aluminum easily accommodates anodizing, printing, embossing, and other surface treatments. Brands can implement vibrant colors, detailed logos, and patterns, turning the cap into a mobile billboard that enhances brand image. 
- Tamper-Evident Design: Integrated tamper ring breaks automatically upon opening, preventing resealing and ensuring the product remains intact. 
- Eco-Friendly and Recyclable: Made from 100% recyclable aluminum, compliant with EU RoHS and REACH standards, lead- and cadmium-free, meeting food-contact safety requirements. 

Applications of 28mm Aluminum Bottle Cap
- Premium mineral water and sparkling water 
- Sports drinks and functional beverages 
- Craft beer and ready-to-drink cocktails 
- Juice, tea beverages, and health drinks 
 
                           
                           
                           
                           
                           
                          
