Description
Septum N20 butyl red/PTFE grey is a laminated pierceable septum for N 20 vial closures used in analytical sealing. Red butyl rubber is combined with a grey PTFE facing so that the chemically resistant PTFE side contacts the sample while the elastomeric butyl layer maintains sealing force and reseal behaviour after needle penetration. Hardness is 50° Shore A and septum thickness is 3,0 mm, a combination suited to consistent performance in headspace GC and related techniques. Packaged as 100 pieces from manufacturer Macherey-Nagel, these septa fit standard N 20 crimp and compatible closure systems. The laminate helps limit adsorption and contamination relative to uncoated elastomers, supporting residual solvent analysis, volatile organic work, and routine sample storage. Laboratories can stock the 100-piece pack for high-throughput preparation lines or general chromatography support. The defined 3,0 mm thickness and 50° Shore A hardness balance ease of piercing with mechanical durability across typical injection sequences.
This article is part of Vial caps & septa, in Vials, caps & septa.
Key features
- Pack size: 100 pc(s)
- Product type: Septum N 20
- Material: Butyl red / PTFE grey
- Hardness: 50° Shore A
- Thickness: 3,0 mm
- EAN: 4046681086557
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Questions about Septa N20 But r/PTFE gr, 50°, 3.0
What is this article?
Septa N20 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.
How does ordering and shipping work?
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.
