Description
Aluminium crimp cap, Ø 20 mm with moulded butyl/colourless PTFE septum is a sealing component for laboratory vials that require a reliable crimp closure. The aluminium shell has a 20 mm diameter and an upper opening of 10 mm, while the integrated septum is 3 mm (0,125 in) thick and combines moulded butyl with a colourless PTFE face for chemical contact. This configuration supports headspace, storage, and sample-preparation workflows where a tight, pierceable seal is essential. Supplied in packs of 100 pieces from manufacturer Labbox, the caps belong to the METRIA product type and fit standard 20 mm crimp-neck vials used across chromatography and general analytical laboratories. Net weight of the pack is 0,100 kg, convenient for bench stock and method kits. The PTFE-lined butyl septum helps maintain sample integrity during multiple injections or short-term storage, and the aluminium crimp design provides mechanical security once properly applied with a compatible crimper. Laboratories can standardise vial sealing with this consistent cap-and-septum combination without mixing incompatible liner materials.
This article is part of Vial caps & septa, in Vials, caps & septa.
Key features
- Pack size: 100 pc(s)
- Cap diameter: Ø 20 mm
- Septum: Moulded butyl/colourless PTFE
- Upper opening: 10 mm
- Septum thickness: 3 mm
- EAN: 8434868054882
- GTIN: 08434868054882
- Technical Information Sheet:
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Questions about Aluminium crimp cap Ø20 mm with moulded septa Butyl / natural PTFE, 100 pcs
What is this article?
Aluminium crimp cap Ø20 mm with moulded septa Butyl / natural PTFE, 100 pcs is the article on this page. Luminix Health distributes Labbox for laboratory use. It sits in Vial caps & septa, inside Vials, caps & septa, in Chromatography equipment.
A vial cap and a septum have to match the vial neck: crimp, screw or snap, and the diameter. The septum material, PTFE/silicone or rubber, decides chemical resistance and how many times a needle can pierce it. A septum that sheds into the solvent becomes ghost peaks.
An autosampler vial is the small closed bottle a chromatograph picks up. The neck is crimp, screw or snap, and the cap and the septum have to be that neck. The septum is the part the needle pierces. A soft septum reseals. A septum that is wrong for the solvent swells or sheds particles into the sample. Inserts reduce the volume when the sample is scarce. The separation they feed is described with IUPAC names and PubChem data.
Which category should I open next?
The category is Vials, caps & septa. The sub-category is Vial caps & septa. The catalogue is Chromatography equipment.
Shelves beside this one are Chromatography accessories, Autosampler vials, Crimpers & decappers and Vial inserts.
What should I check before I order?
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
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Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.