Aluminium Overcaps: 15–20 mm, Taper, Bola and Ring Versions
Aluminium overcaps in 15, 18 and 20 mm — taper, bola, decorated grid and ring versions, with plastic inner sleeves and matching collars.
What we make

Range & specifications
Aluminium overcaps in 15, 18 and 20 mm, in taper, regular, bola, decorated grid and ring versions, with or without a plastic inner sleeve, plus the metal collars that go with them. The AO-08 membo cap uses a heavy inner sleeve for crimp-on pumps with a metal collar, and the AO-09 metal sheathed overcap takes a 16/415 roll-on.
Why it fits as one unit
Shapes and colours are made to your sample, and the embossed logo version carries the mark on the cap rather than on a label. Send the pump ferrule size and the finish you want, and we match the cap, the sleeve and the collar as one set.
Certifications behind this line
Aluminium Caps are produced under our ISO 9001:2015 quality and ISO 14001:2015 environmental systems. The company also holds an ISO 13485:2016 medical-device certificate covering its spray pump lines.
- ISO 9001:2015 — quality management · 117 26 Q 2822 R2 02
- ISO 14001:2015 — environmental management · 117 26 E 1567 R2 02
All three are issued by Shanghai Inger Certification (ICAS). Verify any number on the CNCA registry (cx.cnca.cn).
Patents behind the design
This line sits inside a wider portfolio of 29 valid patents (invention and utility model) across spray pumps, lotion pumps, foam pumps and aerosol cans. Where a product family carries its own design patent, it is listed on the relevant page.
Every patent number links to its Google Patents record — assignee, abstract, claims, drawings and legal status — so a buyer can confirm ownership without asking for a certificate.
Frequently asked questions
What sizes are available?
15, 18 and 20 mm, in taper, regular, bola, decorated grid and ring versions.
Can the cap carry an embossed logo?
Yes — the embossed logo version carries the mark on the cap rather than on a label.
Related reading
Source aluminium overcaps directly
See the full specification table and matched options, or send your requirements for a quotation.
aluminium overcaps — full specifications Request a quote