Description
Cone NS 14,5/23 with straight tube and PTFE stopcock NS 14,5/2,5 mm is a precision laboratory glass adapter for vacuum lines, distillation and general fluid handling. It combines a standard ground joint cone NS 14,5/23 with a straight tube section and an integrated PTFE stopcock featuring a 2,5 mm bore for controlled flow. An olive measuring 9 mm provides a secure hose connection. Fabricated from chemically resistant borosilicate glass 3.3, the adapter offers excellent thermal stability and durability under typical laboratory conditions. This component from manufacturer Rettberg supports grease-free operation thanks to the PTFE stopcock, making it suitable for organic synthesis, solvent transfer and analytical workflows. Classified as an adapter and supplied as one piece with a net weight of 0,020 kg, it fits seamlessly into existing NS joint assemblies. The design is well suited to research, quality-control and teaching laboratories that require reliable ground-joint connections and precise shut-off capability in chemically demanding environments.
This article is part of Stopcocks & valves, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Joint size: NS 14,5/23
- Material: Borosilicate glass 3.3
- Stopcock: PTFE NS 14,5/2,5 mm bore
- Olive diameter: 9 mm
- Technical Information Sheet:
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Questions about Cone NS 14,5/23, with straight tube, stopcock PTFE size 14,5/2,5mm
What is this article?
Cone NS 14,5/23, with straight tube, stopcock PTFE size 14,5/2,5mm is the article on this page. Luminix Health distributes Rettberg for laboratory use. It sits in Stopcocks & valves, inside Tubing, hoses & fittings, in Labware.
A stopcock opens and closes a line, or directs it between ports. Glass stopcocks have a ground plug that needs grease or a PTFE key. The bore decides the flow. A two-way and a three-way key are different parts.
Tubing is how a liquid or a gas moves between two vessels without being poured. Silicone stays flexible and survives repeated autoclaving. PTFE resists almost every solvent and is stiff. PVC is the ordinary flexible line for water and for mild aqueous work. The fitting, not the tube, is what usually leaks: the barb, the thread and the stopcock have to match the tube bore. Glass and plastic apparatus around these lines is indexed under ISO laboratory ware.
Which category should I open next?
The category is Tubing, hoses & fittings. The sub-category is Stopcocks & valves. The catalogue is Labware.
Shelves beside this one are Hose connectors, adapters & fittings, PVC, PTFE & other tubing, Silicone tubing and Tubing accessories.
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.