Description
Septum N 8 silicone white/PTFE red is a replacement liner for N 8 screw closures used in analytical sample sealing. The dual-layer construction pairs white silicone with a red PTFE face to combine elastomeric resilience with a chemically resistant sample-contact surface, suitable for chromatography and general laboratory applications. Hardness is specified at 45° Shore A and thickness at 1,3 mm, providing a defined penetration and resealing profile for repeated needle access. These septa fit N 8 format caps and help maintain consistent seal integrity during storage, transport and instrumental analysis such as GC or HPLC sample introduction. Supplied in packs of 100 pieces, they support efficient replenishment of open-top screw caps on busy benches. The PTFE layer faces the sample to limit adsorption and solvent interaction, while the silicone backing restores the seal after injection. This septum type from manufacturer Macherey-Nagel is intended for laboratories that standardise on N 8 geometry and require clear Shore hardness and thickness specifications for reproducible sealing behaviour.
This article is part of Vial caps & septa, in Vials, caps & septa.
Key features
- Pack size: 100 pc(s)
- Type: N 8 septum
- Material: silicone white/PTFE red
- Hardness: 45° Shore A
- Septum thickness: 1,3 mm
- EAN: 4046681087363
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about Septa N8, Sil w/PTFE r, 45°, 1.3
What is this article?
Septa N8, Sil w/PTFE r, 45°, 1.3 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.
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.
