Description
neochrom® screw cap short thread ND9 is a blue polypropylene (PP) closure with short thread 9-425 and a 6 mm centre hole, fitted with a Red Rubber/PTFE red AG septum for chromatography vials. The septum thickness is 1,0 mm, and the combination is intended as a standard closure for GC and HPLC workflows where reliable resealing supports multiple injections. Temperature resistance spans −40 °C to +120 °C, covering typical sample storage and analytical conditions for this closure type. Offered by manufacturer neolab - Labor, the blue open-top screw cap provides instrument access through the hole while the Red Rubber/PTFE laminate gives the resealing behaviour needed for repeated needle penetration. Pack size is 100 pc(s), suitable for stocking autosampler and routine vial lines. The short-thread ND9 format matches common 9-425 vial necks used in analytical laboratories, making the cap a practical choice for method development, routine QC, and high-throughput chromatographic sample handling without additional performance claims beyond the stated materials and dimensions.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 100 pc(s)
- Product type: screw cap short thread ND9
- Cap material: PP blue with 6 mm hole
- Septum: Red Rubber/PTFE red AG
- Septum thickness: 1,0 mm
- EAN: 4058072029562
- Technical Information Sheet:
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Questions about neochrom® Schraubkappe Kurzgewinde ND9, PP blau mit Loch, Red Rubber/PTFE rot AG
What is this article?
neochrom® Schraubkappe Kurzgewinde ND9, PP blau mit Loch, Red Rubber/PTFE rot AG is the article on this page. Luminix Health distributes neolab for laboratory use. It sits in Screw caps & closures, inside Stoppers, caps & closures, in Matériel de laboratoire.
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 Matériel de laboratoire.
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.
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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.