Description
Centering ring with screen and Perbunan O-ring, stainless steel, DN 160 ISO-K is a flange accessory intended for laboratory and technical vacuum systems built on the ISO-K standard at DN 160. It combines a stainless steel centering ring with an integrated screen and a Perbunan O-ring, enabling alignment, sealing and screening at the flange interface in one part. The stainless steel construction forms the structural ring, the screen occupies the connection opening and the Perbunan elastomer provides the compressible sealing element between the flanges. Supplied as 1 piece, the ring is practical as a replacement or stock spare for DN 160 ISO-K assemblies on larger vacuum lines, chambers or pump connections. Offered by manufacturer WELCH within the accessories and spare-parts category for laboratory equipment, it supports maintenance and build-up of ISO-K DN 160 joints that call for a screened seal. Specify this centering ring when a stainless steel DN 160 ISO-K interface with Perbunan O-ring and screen is required for laboratory or process vacuum hardware.
This article is part of Hose connectors, adapters & fittings, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Type: Centering ring with screen and O-ring
- Material: Stainless steel
- O-ring material: Perbunan
- Flange size: DN 160 ISO-K
- Screen: Integrated
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Questions about Centering Ring with Screen and Perbunan O-Ring, Stainless Steel, DN 160 ISO-K
What is this article?
Centering Ring with Screen and Perbunan O-Ring, Stainless Steel, DN 160 ISO-K 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.

