Description
Small flange screw fitting DN 25 is a polyoxymethylene (POM) connection component intended for thick-walled and standard flanges in laboratory and technical assemblies. This screw fitting provides a practical mechanical fastener where small-flange interfaces join glassware, vacuum lines, or modular apparatus. Fabricated from POM, it combines dimensional stability with the handling properties typical of this engineering polymer, supporting repeated assembly without the weight of metal alternatives. The DN 25 nominal size matches common small-flange dimensions used in research, analytical, and process installations. Each unit is supplied as a single piece with a net weight of 0,062 kg, enabling straightforward integration into existing flange layouts. Laboratory technicians and equipment builders can use this Rettberg fitting when constructing or maintaining modular connections that need a dependable POM screw joint for both reinforced and standard flange geometries. Produced in Germany, the component is suited to professional laboratory environments that rely on consistent small-flange hardware for routine system assembly and maintenance work.
This article is part of Hose connectors, adapters & fittings, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Product type: Screw fitting
- Material: Polyoxymethylene (POM)
- Nominal size: DN 25
- Compatibility: Thick-walled and standard flanges
- Technical Information Sheet:
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Questions about Small flange fitting size 25, for thick-walled and standard flanges
What is this article?
Small flange fitting size 25, for thick-walled and standard flanges 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.