20 mm GC aluminium caps

Product Description

A 20 mm GC aluminum cap generally refers to a 20 mm diameter aluminum cap used in glass containers, often as a sealing or closure mechanism for various industries, such as pharmaceuticals or chemical packaging. The "GC" stands for "glass closure," which suggests this cap is likely intended to seal glass vials or bottles securely.

These caps can come with different features depending on their purpose, such as:

• Center hole or full tear-off for easy access.
• Liner options for airtight or leak-proof sealing.
• Crimp-on or screw-on design depending on the container type.