Description
DURAN® Long Ground Joint Cone, ground NS 14/35 is a precision tapered cone made from borosilicate glass 3.3, designed especially for demanding laboratory applications. The long-ground variant features an extended grinding surface that makes it particularly suitable for high-vacuum work. The cone is finely ground, resulting in lower surface roughness and a high-quality finish that supports a dense, reliable seal via the standard ground joint. This geometry is frequently specified where vacuum integrity is critical and where the larger contact area improves joint performance. The article is supplied as a glass component ready for further processing and installation in glass apparatus and devices. From manufacturer Duran/DWK Life Sciences, the cone integrates seamlessly into custom glassware assemblies. Ground-joint connections should be used with appropriate joint grease or PTFE sleeves. Offered as a single piece with a net weight of 0,014 kg and a gross weight of 0,016 kg, it provides a robust solution for high-vacuum glass systems requiring NS 14/35 long-ground geometry.
This article is part of Distillation heads, adapters & columns, in Distillation & extraction glassware.
Key features
- Pack size: 1 pc
- Storage temperature: Standard
- Joint size: NS 14/35
- Material: Borosilicate glass 3.3
- Grind type: Ground (fine)
- EAN: 4032051046900
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Distillation & extraction glassware
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Distillation heads, adapters & columns
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Questions about DURAN® Long Ground Cone, finished
What is this article?
DURAN® Long Ground Cone, finished is the article on this page. Luminix Health distributes DWK Life Sciences 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.
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.