Description
Conical joint sleeve NS 45/40 is a standardized ground-glass connection component for laboratory apparatus. Produced as a Hülse (sleeve) to DIN 12249, it provides the female conical interface at nominal size NS 45/40, allowing interchangeable mating with matching cones on flasks, condensers, adapters and other glassware. The conical ground surface supports a reliable mechanical seal for routine atmospheric and vacuum work in synthesis, distillation and analytical setups. Offered as a single piece from manufacturer Schlee, this Kegelschliff element belongs to the widely used European NS joint system and integrates directly into modular glass trains without special adapters. NS 45/40 denotes a larger joint class suited to medium- and larger-scale assemblies where stable alignment and chemical resistance of glass-to-glass joints are required. Laboratory technicians and glassblowers employ such DIN-compliant conical sleeves when building or repairing apparatus that must remain compatible across suppliers and instruments. The component is intended for general laboratory material use wherever a precise NS 45/40 sleeve connection is specified.
This article is part of Distillation heads, adapters & columns, in Distillation & extraction glassware.
Key features
- Pack size: 1 pc
- Product type: Conical ground joint sleeve
- Nominal size: NS 45/40
- Standard: DIN 12249
- Component form: Sleeve (sleeve)
- Technical Information Sheet:
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Questions about Conical joints according DIN 12449, socket NS 45/40
What is this article?
Conical joints according DIN 12449, socket NS 45/40 is the article on this page. Luminix Health distributes Schlee 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.
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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.