Description
neochrom® Septum silicone/PTFE, 8 mm Ø is an unmounted septum designed for screw-thread bottles ND8. Combining a silicone base with a PTFE layer, it offers reliable sealing characteristics suited to laboratory vials in sample preparation and analytical procedures. The pack contains 100 individual septa, facilitating efficient replenishment of ND8 closures in high-volume environments. With an 8 mm diameter, the septa match standard ND8 threaded bottles used across chromatography and general laboratory applications. Unmounted delivery allows users to assemble closures according to specific workflow needs while preserving the chemical resistance of the PTFE face. Available from manufacturer neolab - Labor as part of the neochrom® range, these septa provide a practical consumable for maintaining seal integrity during storage, handling or instrumental analysis. The consistent 8 mm sizing and dual-material construction support reproducible performance in routine laboratory sealing tasks, and the 100-piece pack format aids inventory control for continuous analytical operations.
This article is part of Vial caps & septa, in Vials, caps & septa.
Key features
- Pack size: 100 pcs
- Material: Silicone/PTFE
- Diameter: 8 mm
- Type: Unmounted septa
- Compatibility: ND8 screw-thread bottles
- EAN: 4058072009014
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Questions about neochrom® Septum Silikon/PTFE, 8 mm Ø, 100 Stck./Pack
What is this article?
neochrom® Septum Silikon/PTFE, 8 mm Ø, 100 Stck./Pack is the article on this page. Luminix Health distributes neolab 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. 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.

