Description
The adapter, socket NS 29/32 to cone NS 45/40 is a precision ground-joint transition piece fabricated from borosilicate glass 3.3. This expanding adapter allows laboratory glassware with an NS 29/32 socket to be joined to components carrying an NS 45/40 cone, providing a reliable size conversion within modular apparatus. At a net weight of 0,050 kg the piece is easy to handle while retaining the mechanical strength and excellent thermal properties of borosilicate glass 3.3. Offered by manufacturer Rettberg, it is finished to exacting joint tolerances that guarantee a secure seal under vacuum or mild pressure when properly lubricated or fitted with PTFE sleeves. Common applications encompass synthesis setups, fractional-distillation columns and multi-neck reactor configurations where an increase in joint diameter is needed. The glass resists attack by most acids, alkalis and organic solvents encountered in routine laboratory work. Packaged as 1 pc, the adapter fits standard European NS glassware systems and supports rapid reconfiguration of experimental assemblies without the need for custom glassblowing.
This article is part of Hose connectors, adapters & fittings, in Tubing, hoses & fittings.
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Questions about Adapter, socket size 29/32 to cone size 45/40
What is this article?
Adapter, socket size 29/32 to cone size 45/40 is the article on this page. Luminix Health distributes Rettberg 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.
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.

