13mm 20mm 28mm 32mm Aluminum Plastic Vial Cap
Name: custom 20mm flip off caps
Feature: logo engrave raised
Color: custom color according pantone chart
Customize logo on plastic cap, on aluminum part
Customize color according color chart
- Fast Delievery
- Quality Assurance
- 24/7 Customer Service
Full Customization
Description
Product description
Name: custom 20mm flip off caps
Feature: logo engrave raised
Color: custom color according pantone chart
Aluminium bottle cap, flip off caps (aluminium-plastic caps) is one of our main product
1. Customize logo on plastic cap, on aluminum part
2. Customize color according color chart
13mm · 20mm · 28mm · 32mm Aluminum Plastic Vial Cap
Custom Wholesale · Size Selection Matrix
13mm 20mm 28mm 32mm aluminum plastic vial cap · custom wholesale · size selection matrix
Aluminum Plastic
Vial Cap - 4 Sizes
13mm · 20mm · 28mm · 32mm ·
Custom Wholesale · Size Selection Matrix
One construction, four standard sizes · matched MOQ and stock status per size
|
13mm small vial |
20mm standard |
28mm mid-large |
32mm large vial |
|
4 sizes 13/20/28/32mm |
Aluminum + plastic Composite construction |
|
Custom colour Per size |
Wholesale Bulk pricing |
complete size range
13mm to 32mm - one cap construction, four sizes
The aluminum-plastic vial cap is available across the four standard pharmaceutical crimp finish sizes - covering the full small-to-large vial spectrum from a single construction type. Same composite design (aluminum tear/flip skirt + plastic top disc), scaled to each diameter.
|
13mm Small vial 2ml format |
20mm Standard ★ 10ml format |
|
28mm Mid-large 50–100ml format |
32mm Large vial 100–150ml format |
size selection matrix
Size Selection Matrix - full comparison across all four sizes
A detailed side-by-side comparison of all four cap sizes - dimensions, vial compatibility, material thickness, and typical applications - to help you select the correct size for your specific vial neck finish.
| Parameter | 13mmsmall | 20mmstandard ★ | 28mmmid-large | 32mmlarge |
|---|---|---|---|---|
| Dimensional specification | ||||
| Outer diameter | 13.0mm ±0.1 | 20.0mm ±0.1 | 28.0mm ±0.15 | 32.0mm ±0.15 |
| Cap height (typical) | 8–10mm | 10–12mm | 12–14mm | 13–15mm |
| Aluminum thickness | 0.15–0.18mm | 0.18–0.20mm | 0.20–0.23mm | 0.22–0.25mm |
| Vial compatibility | ||||
| Typical vial volume | 1–3ml | 5–10ml | 20–100ml | 100–150ml |
| Common use case | Peptide, single-dose | Multi-dose injectable | Bulk biologics, vet | Bulk reagent, vet bulk |
| Construction options | ||||
| Aluminum-plastic composite | ✓ Available | ✓ Available | ✓ Available | ✓ Available |
| Opening style | Flip-off / tear-off | Flip-off / tear-off | Flip-off / tear-off | Flip-off / tear-off |
| Custom colour | ✓ Full range | ✓ Full range | ✓ Full range | ✓ Full range |
| Production & supply | ||||
| Stock status | In stock | In stock ★ | In stock | Limited / made-to-order |
| Lead time (standard colour) | 1–2 weeks | 1–2 weeks | 2–3 weeks | 3–4 weeks |
How to use this matrix
Match your vial's neck outer diameter (not its fill volume) to the closest cap size - fill volume ranges shown are typical, not absolute, since neck finish can vary independently of volume on some custom vial designs. If you're unsure of your exact vial neck size, send us a sample vial or its technical drawing and we'll confirm the correct cap size before you order.
Inventory status & minimum order quantity
MOQ by size - what to expect for each diameter
Minimum order quantities vary by size, reflecting production batch economics and current stock holding for each diameter - smaller, higher-turnover sizes carry lower MOQs than larger, lower-turnover sizes.
13mm
In Stock
MOQ: 100 pcs
Standard colour, ex-stock.
Custom colour MOQ: 1,000 pcs.
20mm
In Stock
MOQ: 100 pcs
Highest-volume size - lowest MOQ,
fastest turnaround.
28mm
In Stock
MOQ: 5,000 pcs
Standard colour ex-stock.
Custom colour MOQ: 5,000 pcs.
32mm
Limited / MTO
MOQ: 3,000 pcs
Lower turnover size - most orders made-to-order.
Confirm current stock before planning.
MOQ and stock figures are representative - always confirm current status
The MOQ and stock status figures above are typical/representative for this product category and intended as planning guidance - actual current stock levels and MOQs fluctuate with demand and production scheduling. Always confirm live stock status and current MOQ for your specific size, colour, and quantity before finalising a purchase order.
selection guidance
Choosing the right size - a simple process
Selecting the correct cap size comes down to matching your vial's actual neck dimension - here's the process we recommend.
1
Measure or confirm your vial's neck outer diameter
The cap size is determined by the vial neck's outer diameter at the crimp finish point - not by the vial's fill volume. If you have the vial's technical drawing, this dimension should be specified directly. If not, a caliper measurement or a physical sample sent to us will confirm it.
2
Match to the nearest standard size in the matrix
Compare your measured diameter against the four standard sizes (13/20/28/32mm) in the Size Selection Matrix above. Standard pharmaceutical vials are manufactured to these common neck finishes, so an exact or very close match is expected for most off-the-shelf vial designs.
3
Confirm MOQ and stock status for your chosen size
Check the current MOQ and stock status for your selected size and colour combination - particularly important for 32mm, which typically runs on a made-to-order basis rather than ex-stock supply.
4
Request a sample before committing to the full order
Always verify physical fit with a sample cap on your actual vial before placing a wholesale-quantity order - confirming size match this way avoids costly mismatches at scale.
who orders this range
Aluminum plastic vial caps - across the pharmaceutical & veterinary supply chain
The 13–32mm aluminum-plastic vial cap range is specified wherever multiple vial sizes need consistent custom cap supply at wholesale volume.
Pharmaceutical manufacturers
Multi-SKU · 13–32mm range
Manufacturers with product lines spanning multiple vial sizes - sourcing all four diameters from one supplier with consistent colour and construction across the range.
Veterinary pharmaceutical producers
28mm/32mm bulk formats
Veterinary producers filling larger-volume vials - primarily using the 28mm and 32mm sizes for bulk-dispense livestock and companion animal injectables.
Peptide & biologics producers
13mm/20mm small vials
Peptide and small-batch biologics producers primarily using the 13mm and 20mm sizes - taking advantage of the lowest MOQ tier and fastest lead times.
CDMOs & fill-finish
Multi-client, multi-size production
Contract fill-finish organisations running multiple client products across different vial sizes - sourcing the complete size range from one supplier.
Procurement teams
Bulk wholesale · MOQ planning
Procurement teams planning bulk wholesale orders across multiple SKUs - using the size matrix and MOQ data to plan order quantities and production lead time in advance.
Packaging component distributors
B2B · full range stocked
Pharmaceutical packaging distributors stocking the complete 13–32mm cap range to serve customers across the full vial size spectrum.
Four Sizes. One Matrix.One supplier for the whole range.
Tell us your vial neck diameter and target quantity, and we'll confirm the correct cap size, current MOQ, and live stock status within 48 hours. Sample sets available across all four sizes.
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