Description
Flexible coupling DN 25 KF, 90 mm is a vacuum-compatible connector for laboratory and technical installations that use the Klein flange (KF) interface. Nominal diameter DN 25 and an overall length of 90 mm allow secure joining of pumps, manifolds, cold traps and chambers while compensating minor misalignment and vibration between fixed components. Flexibility in the coupling body protects adjacent glassware, instruments and seals from mechanical load during start-up, continuous running and service work. Supplied as a single piece, it integrates into modular KF vacuum networks common in analytical labs, research facilities and process development environments. This component from manufacturer WELCH enables straightforward assembly and separation of DN 25 KF flanges without permanent alteration of the vacuum line. It serves as an accessory or replacement part for laboratory equipment where reliable, reconfigurable vacuum joints are essential. The 90 mm length supports compact layouts while still providing the compliance needed for flexible routing between rigid KF ports. Suitable wherever DN 25 KF connections must remain vacuum-tight under everyday laboratory handling and system changes.
This article is part of Hose connectors, adapters & fittings, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Product type: Flexible coupling
- Nominal diameter: DN 25 KF
- Length: 90 mm
- Flange standard: KF (Klein flange)
Récemment consulté
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Questions about Flexible Coupling, DN 25 KF, 90mm
What is this article?
Flexible Coupling, DN 25 KF, 90mm is the article on this page. Luminix Health distributes WELCH for laboratory use. It sits in Hose connectors, adapters & fittings, inside Tubing, hoses & fittings, in Matériel de laboratoire.
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 Matériel de laboratoire.
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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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.