Description
Expansion adapter cone NS 29/32 to socket NS 45/40 is a precision ground-glass joint transition piece engineered to connect laboratory glassware of unequal standard joint sizes. Equipped with a male cone (Kern) NS 29/32 and a female socket (Hülse) NS 45/40, the expansion piece delivers a secure, leak-resistant interface for distillation, reaction and vacuum setups according to DIN 12257. Supplied as a single unit with a net weight of 0,073 kg, it enlarges the joint diameter to accommodate larger apparatus while maintaining the standardised taper geometry essential for tight seals. Manufactured by Witeg, the adapter forms part of the proven range of normschliff transition pieces routinely applied in organic synthesis, analytical chemistry and preparative laboratory workflows. Durable glass construction withstands repeated assembly and disassembly without impairing joint integrity or vacuum performance. Laboratories that require reliable size conversion between NS 29/32 and NS 45/40 systems will find this expansion adapter integrates readily into existing glassware trains and supports modular apparatus design for versatile experimental arrangements.
This article is part of Hose connectors, adapters & fittings, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Joint type: Expansion adapter
- Cone (Kern): NS 29/32
- Socket (Hülse): NS 45/40
- Standard: DIN 12257
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Questions about Expansions adapter ST 29/32 -> ST 45/40
What is this article?
Expansions adapter ST 29/32 -> ST 45/40 is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Hose connectors, adapters & fittings, inside Tubing, hoses & fittings, in Labware.
A hose connector or adapter joins two lines, or steps one bore down to another. The barb diameter has to match the tube, and the thread has to match the stopcock or the bottle. Most leaks are a mismatch here, not a hole in the tube.
Tubing is how a liquid or a gas moves between two vessels without being poured. Silicone stays flexible and survives repeated autoclaving. PTFE resists almost every solvent and is stiff. PVC is the ordinary flexible line for water and for mild aqueous work. The fitting, not the tube, is what usually leaks: the barb, the thread and the stopcock have to match the tube bore. Glass and plastic apparatus around these lines is indexed under ISO laboratory ware.
Which category should I open next?
The category is Tubing, hoses & fittings. The sub-category is Hose connectors, adapters & fittings. The catalogue is Labware.
Shelves beside this one are PVC, PTFE & other tubing, Stopcocks & valves, Silicone tubing and Tubing accessories.
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.
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.