Description
N 20 aluminium crimp cap with centre hole is a silver-finish vial closure for chromatography sample handling. The cap carries a dark grey butyl septum with centric grey PTFE lamination, specified at 50° Shore A hardness and 3 mm septum thickness. The open aluminium shell enables needle penetration while the laminated septum provides the sealing interface for N 20 neck vials used in GC and HPLC workflows. Pack size is 100 pieces, matching routine laboratory consumption for method development, routine analysis and sample storage. Physical build centres on a durable aluminium crimp shell that works with standard N 20 crimping tools and delivers uniform compression of the butyl/PTFE liner. The dark grey butyl body supports resealability after injection, and the grey PTFE face is oriented toward the sample path for reduced interaction at the contact surface. These closures from manufacturer Macherey-Nagel belong to the chromatography accessories range and are intended as dedicated Bördelkappen for analytical laboratories that standardise on N 20 aluminium crimp systems. Specify them wherever a defined Shore hardness, fixed septum thickness and silver open-top aluminium finish are required for consistent vial sealing.
This article is part of Vial caps & septa, in Vials, caps & septa.
Key features
- Pack size: 100 pc(s)
- Cap type: N 20 aluminium crimp cap, open hole
- Colour: Silver
- Septum: Butyl dark grey with centric PTFE grey lamination
- Hardness: 50° Shore A
- EAN: 4046681087516
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Questions about CC N20-H,si,But dgr/ct.PTFEgr,50°,3
What is this article?
CC N20-H,si,But dgr/ct.PTFEgr,50°,3 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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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.