Description
Centering ring with fine filter and Viton O-ring, stainless steel, DN 25 KF is a KF flange accessory for laboratory equipment connections. This component combines a stainless steel centering ring with an integrated fine filter and a Viton O-ring, matching the DN 25 KF interface used on vacuum lines, manifolds and related laboratory apparatus. The fine filter supports cleaner joining at the flange, while the Viton elastomer forms the sealing surface between mating faces. Stainless steel construction provides mechanical strength for repeated clamp assembly in routine laboratory service. Offered as a single-piece unit from manufacturer WELCH, the centering ring is intended as an accessory or replacement part when assembling or servicing DN 25 KF fittings. Laboratories that maintain KF hardware can select this filtered stainless steel ring wherever a Viton-sealed DN 25 KF centering component with fine filter is required. Clear DN 25 KF designation aids correct matching to existing clamps, flanges and spare-part inventories without changing standard KF geometry.
This article is part of Hose connectors, adapters & fittings, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Type: Centering ring with fine filter and Viton O-ring
- Material: Stainless steel
- Flange size: DN 25 KF
- Seal: Viton O-ring
- Filter: Fine filter integrated
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Questions about Centering Ring with Fine Filter and Viton O-Ring, Stainless Steel, DN 25 KF
What is this article?
Centering Ring with Fine Filter and Viton O-Ring, Stainless Steel, DN 25 KF 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 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. Delivery across the EU, two to five days if 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.
