You have sourced the perfect bottle for your product, but are you worried the closure won't offer the professional seal your brand demands? We know that a producer's worst nightmare is leakage during transit and product spoilage due to poor fitment.
At Vaza.gr, we provide the solution with our specialized range of GPi (Glass Packaging Institute) Caps. These internationally recognized aluminum screw closures belong to the broader category of caps for bottles & jars, precisely engineered to fit perfectly onto standardized bottle necks with millimeter accuracy.
Why professionals choose our GPi closures:
- Technical Integrity: Featuring a built-in, high-density EPE Liner, ensuring your product never touches the metal shell and remains chemically unaltered.
- Zero Leakage: They eliminate the risk of spills, offering an airtight seal even for low-viscosity liquids (such as essential oils or spirits).
- Standard Fit: Available in the market's most popular finishes (22/400, 24/400, 28/400), so you can always find the perfect match for your bottle without the guesswork.
How to Choose the Right GPi Size (The Dimension Guide)
Selecting the correct cap size isn't about luck; it's about precise measurement. The term GPi is often followed by codes like 22/400 or 28/400. The first number (e.g., 28) refers to the external diameter of the bottle's neck in millimeters. The second number (e.g., 400) defines the thread style (how many turns the cap makes).
22/400: Ideal for small vials, essential oils, and sample bottles.
24/400: A common standard for cream bottles and lotions.
28/400: The most widespread size for syrup bottles, supplements, and certain beverages. Pro Tip: Always measure the external diameter of your bottle's neck (including the thread) before placing your order.
Liners & Security: The Quality You Can't See
Beyond aesthetics (Gold, Black, Silver), the quality of a GPi cap is determined by its interior. Our closures are not just pieces of aluminium; they are equipped with specialized liners that act as a barrier against oxygen and moisture. This is critical for products sensitive to oxidation, such as natural cosmetics and pharmaceutical formulations. Furthermore, many of our caps feature a safety ring or tamper-evident band that breaks upon first opening, adding authority to your brand and assuring the final consumer that the product has not been compromised.