Beschreibung
Conical ground joint NS 45/40 is a standardised male core (Kern) ground connecting element for laboratory apparatus. Manufactured to DIN 12249, the NS 45/40 taper defines the larger diameter and ground length of the cone so it mates interchangeably with matching female sockets of the same nominal size. This single-piece conical joint supports construction and maintenance of larger glassware assemblies, including wide-neck flasks, condensers and process adapters that require a defined ground seal. DIN 12249 geometry ensures consistent fit and sealing-surface contact along the ground zone when paired with compatible sockets. The NS 45/40 size is typical for higher-capacity or larger-bore laboratory setups in preparative and distillation work. These conical joints from manufacturer Schlee form part of the essential labware range used to couple apparatus in teaching and research environments. Pack size is one piece, enabling targeted replacement or extension of existing joint inventories. Choosing the correct NS designation maintains interchangeability across multi-component glass trains that rely on DIN conical joints for reliable mechanical and sealing performance under standard laboratory conditions.
This article belongs on Distillation heads, adapters & columns, in Distillation & extraction glassware.
Key features
- Pack size: 1 pc
- Product type: Conical ground joint
- Nominal size: NS 45/40
- Joint form: Male core (Kern)
- Standard: DIN 12249
- Technical Information Sheet:
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Questions about Conical joints according DIN 12249, cone NS 45/40
What is this article?
Conical joints according DIN 12249, cone 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 Laborbedarf.
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 Laborbedarf.
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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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.