Description
Inner centring ring 40 mm is a precision laboratory component intended for plane ground joint and flat flange holder assemblies. It features an O-ring seal of Perbunan together with a stainless steel construction, delivering dependable centring and sealing at the 40 mm diameter. The ring enables accurate alignment of flat flange connections in laboratory glassware where correct fit and stable seating are required. Pack size is 1 pc; net and gross weight are each 0,018 kg. Produced in Germany (Baden-Württemberg) and offered by manufacturer Witeg, the part is suited to Planschliff mounting systems used in distillation, filtration and general process apparatus. Perbunan provides resilient sealing contact, while stainless steel preserves mechanical integrity during routine laboratory use. The specified 40 mm size corresponds to matching flange geometries, allowing straightforward installation or replacement in existing holder setups. This inner centring ring serves as a compact, well-defined original or spare component for professional laboratory environments that rely on consistent flange alignment and secure O-ring performance.
This article is part of Stand & rack accessories, in Stands, clamps & racks.
Key features
- Pack size: 1 pc
- Diameter: 40 mm
- Seal: O-ring made of Perbunan
- Construction: Stainless steel
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Questions about Internal center ring 40 mm
What is this article?
Internal center ring 40 mm is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Stand & rack accessories, inside Stands, clamps & racks, in Labware.
These are the extra rods, connectors, feet and labels that extend a stand or a rack. A right-angle connector is how a second rod leaves the first. The diameter has to match the rod already on the bench.
A stand, a clamp and a rack hold something still so the hands can do the work. A bosshead locks a clamp to a rod. A test-tube rack keeps tubes upright and in an order the operator can read back. The failure is almost always mechanical: the clamp slips, or the rack does not match the tube diameter. The glass they support is indexed under ISO laboratory glassware.
Which category should I open next?
The category is Stands, clamps & racks. The sub-category is Stand & rack accessories. The catalogue is Labware.
Shelves beside this one are Test tube racks, Stands, rods & bases and Clamps & bossheads.
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.