Aluminum-plastic non-spill screw cap, GPI 28-400 and 33-400
An aluminum-plastic non-spill screw cap for GPI 28-400 and 33-400 bottle finishes (30 and 35 mm), used on spirits, liquor and beverage bottles.
- Minimum order
- 100,000 pcs
- Neck finish
- GPI 28-400 / 33-400
- Type
- Aluminum-plastic cap
- Reference price
- $0.04-0.06 / pc
Reference FOB price per piece for plain stock items (2026-10). Your quote depends on quantity, decoration and packing.
Overview
This screw cap pairs an aluminum outer shell with a plastic inner, and fits GPI 28-400 and 33-400 bottle finishes. In GPI terms, the first number is the nominal neck diameter in millimeters and "400" is a shallow single-turn thread, a common finish on spirits and beverage bottles. The listed cap sizes are 30 mm and 35 mm, and the cap has a non-spill feature.
Color and logo are customized to order. Packing is 2,430 pcs per carton for 28-400 and 4,416 pcs per carton for 33-400. The minimum order is 100,000 pcs. The factory works to an ISO 9001 quality system. We also make glass bottles with these finishes, so caps and bottles can be quoted together.
Typical uses
- Vodka and whiskey bottles
- Liqueurs
- Beverage bottles
- Syrups and cordials
Key points
- Fits GPI 28-400 and 33-400 finishes
- 30 mm and 35 mm cap sizes
- Aluminum shell with plastic inner
- Non-spill design
- Custom colors and logo
Specifications
From the factory listing. Final dimensions, weight and tolerances are confirmed on the drawing sent with your quote.
Packing
2,430 pcs per carton (28-400); 4,416 pcs per carton (33-400)
Certification listed
ISO 9001
| Type | Screw cap |
|---|---|
| Material | Aluminum-plastic |
| Neck finish | GPI 28-400, GPI 33-400 |
| Size | 30 mm, 35 mm |
| Feature | Non-spill |
| Color | Custom |
| Logo | Custom logo accepted |
| Certification | ISO 9001 |
| Packing | 2,430 pcs/carton (28-400); 4,416 pcs/carton (33-400) |
| Origin | Shanghai, China |
Questions about this item
What does GPI 28-400 mean?
It is a standard bottle finish: a 28 mm nominal neck diameter with a 400-style shallow single-turn thread.
What is the MOQ?
The MOQ is 100,000 pcs. Color and logo are customized within that order.
Can you supply bottles with this finish?
Yes. We make glass bottles and can quote bottles and caps together to the same finish.
Request a quote
For Aluminum-plastic non-spill screw cap, GPI 28-400 and 33-400. Tell us the quantity, decoration and destination; we reply with price, MOQ, lead time and sample options.
- Product referenceMG-1600076115881
- WhatsApp+86 176 2154 1688
- Emailinquiry@mars-glass-factory.com



