Description
Ground joint sleeve NS 14/23 is a precision PTFE sleeve for standard ground glass joints used throughout laboratory glassware. Featuring a wall thickness of 0,05 mm and longitudinal grooves, it provides a thin, chemically resistant interface between male and female cones, improving seal integrity and helping to prevent joint seizure during prolonged operation. The flexible film adapts to the NS 14/23 taper while adding minimal bulk, supporting vacuum-tight and liquid-tight assemblies in distillation, extraction, and reaction setups. Supplied as one piece with a net weight of 0,002 kg, the sleeve is a practical accessory for organic synthesis, sample work-up, and analytical apparatus. Grooves promote uniform contact pressure and simplify fitting or removal when building or dismantling multi-neck flasks, condensers, and adapters. This component from manufacturer Witeg offers the solvent resistance expected of PTFE and fits standard European ground-joint systems used in research, teaching, and quality-control laboratories. It is intended for repeated laboratory use where clean, grease-reduced sealing of NS 14/23 joints is required.
This article is part of Distillation heads, adapters & columns, in Distillation & extraction glassware.
Key features
- Pack size: 1 pc
- Product type: Ground joint sleeve
- Joint size: NS 14/23
- Material: PTFE
- Wall thickness: 0,05 mm
- Surface: grooved
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Questions about Sleeves ST 14/23
What is this article?
Sleeves ST 14/23 is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Grease, boiling stones & sealants, inside Tools & accessories, in Labware.
Grease seals a ground joint. Boiling stones give a liquid a place to start boiling so it does not bump. A sealant does the same job as grease when grease would contaminate the product. They are small, and they decide whether a joint weeps.
The small tools of the bench are what the hand actually holds: a spatula for a powder, forceps for an object that must stay clean, a brush for a narrow neck, a desiccator when a dried sample must not take up water again. None of these reads a measurement. They keep the measurement possible. The apparatus around them is listed under ISO laboratory apparatus.
Which category should I open next?
The category is Tools & accessories. The sub-category is Grease, boiling stones & sealants. The catalogue is Labware.
Shelves beside this one are Spatulas & spoons, Other lab tools & accessories, Lab furniture, trolleys & storage, Tweezers & forceps, Scissors, scalpels & dissecting instruments, Weighing boats, dishes & paper, Desiccators & desiccant, Timers, stopwatches & calculators, Stationery, books & lab notebooks, Brushes & cleaning tools, Stirring rods, spreaders & glass tools, Cutting & sealing tools and Gas handling & burners 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.