Description
Socket NS 7/16 is a standardised ground-joint socket intended for laboratory glassware systems according to DIN 12249. With an outer diameter of 10 mm, a length of 120 mm and a wall thickness of 1,5 mm, it provides a robust female joint for secure apparatus connections. The component is supplied as a single piece weighing 0,011 kg net, suitable for both permanent installations and interchangeable setups. NS 7/16 sockets are commonly selected for medium-scale distillation trains, reaction vessels and vacuum manifolds where reliable sealing and dimensional consistency are essential. Manufactured by Witeg, the socket adheres to the interchangeability requirements of the DIN standard, ensuring proper fit with matching cones. The increased wall thickness relative to smaller NS sizes enhances mechanical durability during repeated assembly and thermal cycling. This ground joint supports efficient construction of modular glass apparatus in research, quality-control and teaching laboratories, allowing rapid adaptation of experimental configurations while maintaining vacuum integrity and chemical resistance typical of laboratory glassware.
This article is part of Distillation heads, adapters & columns, in Distillation & extraction glassware.
Key features
- Pack size: 1 pc
- Joint size: NS 7/16
- Standard: DIN 12249
- Outer diameter: 10 mm
- Length: 120 mm
- Wall thickness: 1,5 mm
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Distillation & extraction glassware
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Distillation heads, adapters & columns
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Questions about Socket ST 7/16
What is this article?
Socket ST 7/16 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.
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.

