Description
Solid PTFE NS stopper NS 14/23 is a laboratory ground joint stopper produced from polytetrafluoroethylene (PTFE) for sealing standard taper joints of size NS 14/23. The solid PTFE construction is suited to closing flasks, condensers, adapters and related glassware that carry a matching NS 14/23 conical joint. PTFE offers the chemical inertness expected for many laboratory media and supports repeated use as a plastic Normschliff stopper. Net weight is 0,015 kg and gross weight is 0,015 kg, supplied as 1 pc. This solid NS stopper from manufacturer Witeg originates from Germany (Baden-Württemberg) and belongs to the range of plastic standard ground joint stoppers. The one-piece solid design avoids internal cavities and is dimensioned for the widely used NS 14/23 joint standard. It is appropriate for research, quality-control and teaching setups that require a reliable PTFE plug on mid-size laboratory glass connections. Pair it with apparatus specified for NS 14/23 to complete sealed assemblies without introducing metal or glass stopper components.
This article is part of Ground-joint glass stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Material: Polytetrafluoroethylene (PTFE)
- Ground joint size: NS 14/23
- Construction: Solid
- Product type: NS ground joint stopper
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Questions about ST-stoppers ST14/23 PTFE solid
What is this article?
ST-stoppers ST14/23 PTFE solid is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Ground-joint glass stoppers, inside Stoppers, caps & closures, in Labware.
A ground-glass stopper matches a ground neck of a stated joint size. A 14/23 stopper does not seal a 29/32 neck. The stopper is part of the flask's seal, and a chip on the grind is a leak.
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 Ground-joint glass stoppers. The catalogue is Labware.
Shelves beside this one are Screw caps & closures, Rubber & silicone 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.