Description
Cone NS 85/55 DURAN is a large standard ground-joint cone manufactured to DIN 12249 from DURAN tubing in borosilicate glass 3.3. With an outer diameter of 80 mm, a length of 200 mm and a wall thickness of 3,5 mm, it forms a sturdy male joint component for laboratory glassware assemblies. The DURAN® borosilicate construction offers high chemical resistance and good thermal performance for synthesis, distillation and apparatus work. Available as a single piece from manufacturer Witeg, this NS 85/55 cone is intended for custom glass systems that need a wide standard joint with consistent geometry. Ground sealing surfaces support a reliable fit with the corresponding socket in atmospheric or moderate vacuum service. Research and process laboratories use such cones when building or servicing multi-neck vessels, large adapters and reaction setups. Combining DIN-defined dimensions with the established properties of borosilicate glass 3.3, the cone provides a durable connection element for demanding chemical laboratory environments.
This article is part of Distillation heads, adapters & columns, in Distillation & extraction glassware.
Key features
- Pack size: 1 pc(s)
- Joint size: NS 85/55
- Standard: DIN 12249
- Material: Borosilicate glass 3.3 (DURAN®)
- Outer diameter: 80 mm
- Length: 200 mm
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Questions about ST-cone ST85/55 Duran
What is this article?
ST-cone ST85/55 Duran is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Distillation heads, adapters & columns, inside Distillation & extraction glassware, in Labware.
A still head, an adapter or a column is the glass between the boiling flask and the condenser. A Vigreux or packed column gives the vapour a surface so a closer-boiling mixture can separate. The joint sizes at both ends have to match the flask and the condenser.
Distillation separates liquids by boiling point. A condenser turns the vapour back into liquid: Liebig, coil and cold-finger shapes differ in how much cooling surface they offer. A still head and a column sit between the flask and the condenser. A Soxhlet extractor washes a solid again and again with the same solvent. Ground joints have a standard size, and the joint, not the flask, is what has to match. The pieces are indexed under ISO laboratory glassware.
Which category should I open next?
The category is Distillation & extraction glassware. The sub-category is Distillation heads, adapters & columns. The catalogue is Labware.
Shelves beside this one are Condensers, Ground-joint glassware (other) and Soxhlet & extraction apparatus.
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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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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.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.