Aluminium ROPP caps in 20, 22, 25 and 28 mm.
Roll-on pilfer-proof closures made from alloy 8011 sheet — plain, anodised, colour coated or dry-offset printed, and lined with the wad that decides whether your bottle holds its seal.
Pick the size that matches your bottle neck.
Cap size follows the bottle's neck diameter in millimetres. If you are unsure, send us a sample bottle — we will measure the finish and send the matching cap.
Injectable vials, small pharma and cosmetic bottles.
Syrups, tonics, lab reagents and flavour bottles.
Spirit miniatures, edible oil and concentrates.
Beverages, food, agro packs and wide-neck bottles.
The liner does the sealing, not the shell.
The aluminium shell holds the cap on. What keeps the product in, and the air out, is the wad pressed inside the cap top. We fit the liner to what is going in the bottle.
| Material | Aluminium alloy 8011, medical-grade sheet |
|---|---|
| Sizes | 20 · 22 · 25 · 28 mm |
| Liner | EPE or latex, matched to your product |
| Skirt | Knurled for roll-on capping, with pilfer band |
| Finish | Plain, anodised silver or gold, colour coated, printed |
| Printing | Dry-offset, logo or tagline, top embossing available |
| Colour check | No leach in isopropyl alcohol after 24 hours |
| HSN code | 83099020 |
| Capping | Suits standard ROPP capping machines and sealing heads |
A dimension sheet for your size is issued with your free samples, matched to your bottle’s neck finish.
Your cap, your colour.
Anodised silver and gold are stock. Colour coating and printing are matched to the specimen you approve, and held across repeat orders so batches do not drift.
Plain and anodised
Mill-finish aluminium, anodised silver or anodised gold — the fastest option and the one most pharmaceutical and chemical buyers order.
Colour coated
Blue, white, red, green or a shade matched to your pack. Useful when the cap colour codes a product strength or variant on the shelf.
Printed and embossed
Dry-offset printing for a brand name, logo or tagline, and top embossing where you want the mark without ink.
PP caps, pilfer-proof caps, aluminium screw caps.
All of these describe the closure on this page. The full form of ROPP is roll-on pilfer-proof: the cap arrives as a plain aluminium shell and the thread is formed onto the bottle neck by the capping head, so the seal is made against your exact glass.