28-400 Aluminum Screw Caps
The 28mm aluminum screw cap is made from high-quality aluminum, offering a lightweight structure, corrosion resistance, and durability. The aluminum's natural resistance to oxidation makes it ideal for environments exposed to moisture, chemicals, or outdoor conditions. It is non-magnetic, has good thermal conductivity, and can undergo anodization to enhance surface hardness or create custom color finishes.
Available Options
Premium Metal Finishes
Available in luxurious gold and classic silver, offering a high-end aesthetic that elevates brand perception for cosmetics, spirits, and gourmet food products.
Easy Open Design
User-friendly twist-off mechanism
Universal Fit
Compatible with standard 28mm neck finish
Secure Seal
Prevents leaks and maintains freshness
Product Details
28mm aluminum screw caps are designed with a continuous thread (CT) and are compatible with 28-400 specification bottle necks, ensuring reliable engagement with glass and plastic bottles for effective sealing. The cap body is typically made from brushed or smooth aluminum, making it durable and high-end in appearance. The inner part of the cap features a compressible liner, typically made from polyethylene (PE) foam or expanded polyethylene (EPE), providing leak-proof, chemical resistance, and preservation functions.
Key Features
* Aluminum alloy: lightweight, durable, corrosion-resistant, and well-suited for harsh environments (such as marine or chemical environments). It is recyclable and offers an excellent strength-to-weight ratio.
* Surface treatment options: anodizing (customizable colors, enhanced UV/scratch resistance), powder coating, spray painting, or natural polishing.
Why Choose This Product
Premium quality meets sustainable innovation
Premium Metal Finishes
Available in luxurious gold and classic silver, offering a high-end aesthetic that elevates brand perception for cosmetics, spirits, and gourmet food products.
Easy Open Design
User-friendly twist-off mechanism
Universal Fit
Compatible with standard 28mm neck finish
Secure Seal
Prevents leaks and maintains freshness
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