Description
neochrom® Screw Caps ND20 white closed with silicone white/PTFE red septa are closed polypropylene screw caps for ND20 vial systems in chromatography and sample preparation. Each white PP cap is fitted with a white silicone/red PTFE septum intended for single-injection use, combining soft sealing behaviour with a chemically resistant sample-facing layer. The septum is temperature-resistant from −60 °C to +200 °C, 1,3 mm thick and rated at 45° Shore A hardness, supporting reliable piercing in GC and related workflows. These closed ND20 caps from manufacturer neolab - Labor come in packs of 100 pieces and suit laboratories that need a silicone/PTFE barrier for disposable injection sequences and secure vial closure. The white closed design helps shield samples from external contamination, while the broad temperature window covers both chilled storage of sealed vials and elevated injector conditions. Ideal for analytical, quality-control and research environments standardising ND20 screw-cap sealing across autosampler and manual injection methods.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 100 pc(s)
- Cap type: ND20 white closed PP
- Septum: silicone white/PTFE red
- Temperature range: −60 °C to +200 °C
- Septum thickness: 1,3 mm
- EAN: 4058072037550
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Questions about neochrom® Schraubkappen ND20 weiß geschl., Silikon weiß/PTFE rot, 100 Stck./Pack
What is this article?
neochrom® Schraubkappen ND20 weiß geschl., Silikon weiß/PTFE rot, 100 Stck./Pack is the article on this page. Luminix Health distributes neolab for laboratory use. It sits in Screw caps & closures, inside Stoppers, caps & closures, in Labware.
A screw cap has a thread and a liner. The thread has to match the bottle. The liner has to survive the liquid: a pulp liner fails in a solvent that a PTFE-faced liner ignores. The colour of the cap is not the specification.
A closure is the part that decides whether a bottle stays shut and whether the contents attack the seal. A ground-glass stopper matches a ground neck. A screw cap needs the right thread and a liner that survives the liquid. Rubber and silicone stoppers push into a mouth. The liner, not the colour of the cap, is the chemical choice. The vessels they close are indexed under ISO laboratory glassware.
Which category should I open next?
The category is Stoppers, caps & closures. The sub-category is Screw caps & closures. The catalogue is Labware.
Shelves beside this one are Rubber & silicone stoppers, Ground-joint glass stoppers, Lids & seals and Closures (other).
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.