Description
Ground joint sleeve made of PTFE, flexible, NS 19/26 is a grease-free sealing sleeve for standard laboratory ground-glass joints of size 19/26. Fabricated from flexible PTFE, it is self-lubricating, so no joint grease is required during assembly or disassembly. The sleeve is suitable for low and medium vacuum work and withstands temperatures up to 280 °C, making it appropriate for heated reactions, distillations and other thermal processes. Available from manufacturer Labbox in a pack of 10 pieces, it offers a chemically resistant, inert seal between matching conical joints while keeping apparatus clean and free from grease residues. The lightweight pack has a net weight of 0,004 kg. These NS 19/26 PTFE sleeves support reproducible sealing performance across multiple glassware setups and are a practical consumable for laboratories that prioritise vacuum integrity, thermal stability and reduced contamination from lubricants.
This article is part of Distillation heads, adapters & columns, in Distillation & extraction glassware.
Key features
- Pack size: 10 pc(s)
- Joint size: NS 19/26
- Material: PTFE
- Design: flexible, self-lubricating
- Vacuum suitability: low and medium vacuum
- EAN: 8434868037564
- GTIN: 08434868037564
- Technical Information Sheet:
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Questions about Flexible PTFE sleeves for 19/26 glass joints, 10 pcs
What is this article?
Flexible PTFE sleeves for 19/26 glass joints, 10 pcs is the article on this page. Luminix Health distributes Labbox 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. Delivery across Europe, two to five days when in stock. 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.
