Chennai, Tamil Nadu · manufacturing since the 1990s
Aluminium ROPP caps, held to a tenth of a millimetre.
GSR Metal Caps manufactures roll-on pilfer-proof closures in 20, 22, 25 and 28 mm — alloy 8011 shells, EPE or latex wads, and a written dimension sheet with every batch.
Request free samples
See full specifications
30+Years making closures
20–28Cap sizes, in mm
8011Aluminium alloy
30+Years manufacturing ROPP closures
13+Indian manufacturers supplied
4Standard neck sizes, 20–28 mm
100%Made in-house at Chennai
Products
Four sizes that cover almost every standard neck.
Each size is made from medical-grade aluminium sheet, knurled for a clean roll-on, and lined with an EPE or latex wad chosen for what goes in the bottle.
Finishes
Plain, anodised, colour coated or printed to your brand.
Anodised silver and gold are stock finishes. Colour coating and dry-offset printing are matched to your approved specimen, and the colour is tested so it does not leach in isopropyl alcohol over 24 hours.
Why buyers stay
A cap a fraction out of tolerance stops a filling line.
That is the whole job. We hold sizing tight, match colour batch to batch, and dispatch on the date we promised — so your line never waits on closures.
Dimensions checked against a written spec
Outer and inner diameter, overall height, wall and liner thickness recorded per batch.
Colour matched to your approved specimen
Including a 24-hour isopropyl alcohol leach test before dispatch.
Wad chosen for your product
EPE for most syrups, oils and chemicals; latex where the contents call for it.
Packed to arrive undented
Counted and boxed for transit anywhere in India.
What is inside a GSR cap
Four elements, each held to spec.
01
Aluminium shell, alloy 8011
Drawn from medical-grade medical-grade sheet for even wall strength.
02
Knurled skirt
Fine vertical ridges that let the capping head roll the thread on cleanly.
03
EPE or latex wad
The liner that actually makes the seal and keeps the bottle leak-proof.
04
Pilfer band
Separates on first opening, so tampering shows at a glance.
Read the specifications
Industries
Bottles that have to hold, in sectors that get audited.
Same cap, many names
ROPP cap, pilfer-proof cap, PP cap — one component.
Buyers across India ask for the same aluminium closure under different names, and enquiries sometimes stall over the wording. They all describe the roll-on pilfer-proof aluminium cap we make.
| ROPP cap | Roll-on pilfer-proof cap — the full form |
|---|---|
| PP cap | Pilfer-proof cap, the shortened trade name |
| Aluminium screw cap | The thread is rolled on during capping |
| Roll-on closure | Describes how the cap is formed on the neck |
| Metal cap / aluminium seal cap | General names for the same part |
Supply
Despatched from Chennai, across India.
Most orders leave for Tamil Nadu, Karnataka, Telangana, Maharashtra and Gujarat, but we ship anywhere a courier or transporter runs.
ChennaiCoimbatoreMaduraiTiruppurBengaluruHyderabadMumbaiPuneAhmedabadDelhi NCRKolkataIndoreVijayawadaKochiVisakhapatnamNagpur