Description
Aluminium crimp cap N20-L silver with centre hole is a ready-assembled N 20 closure combining a silver aluminium crimp shell and a laminated septum. The septum is red butyl with a grey PTFE facing, specified at 50° Shore A hardness and 3,0 mm thickness, giving a chemically resistant sample-contact surface and a resilient sealing body for pierceable applications. After crimping, the aluminium shell provides mechanical integrity on compatible headspace and analytical vials, while the centre opening allows needle access for GC and related workflows. Supplied in packs of 100 pieces from manufacturer Macherey-Nagel, the assembly is convenient for laboratories that prefer matched cap-and-septum sets rather than separate components. PTFE facing helps reduce adsorption versus bare elastomer, supporting residual solvent testing, volatile analysis, and routine sealed-sample storage on N 20 necks. The silver finish aids visual identification on the bench. A 100-piece pack size suits both high-throughput sample preparation and steady laboratory replenishment of standard crimp closures.
This article is part of Vial caps & septa, in Vials, caps & septa.
Key features
- Pack size: 100 pc(s)
- Product type: Aluminium crimp cap N20-L with septum
- Cap colour: Silver
- Centre hole: Yes (L)
- Septum: Butyl red / PTFE grey
- EAN: 4046681086540
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Questions about CC N20-H, si, But r/PTFE gr, 50°, 3.0
What is this article?
CC N20-H, si, But r/PTFE gr, 50°, 3.0 is the article on this page. Luminix Health distributes Macherey-Nagel 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. Delivery across Europe, two to five days when in stock. 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.
