Description
HV plane flange 90 mm is a high-vacuum plane flange intended for laboratory glassware and vacuum apparatus assemblies. Measuring 90 mm and finished fire-polished, it incorporates a dedicated sealing bed that supports reliable flat-face joints in high-vacuum lines. The component weighs 0,616 kg net and is supplied as a single piece, making it straightforward to integrate into existing glass or hybrid vacuum setups. Manufactured by Witeg, this plane flange belongs to the standard range of plan flanges used for connecting vessels, adapters and tubing where a stable, polished sealing surface is required. Its fire-polished finish reduces surface irregularities that could compromise vacuum integrity, while the integrated sealing bed accommodates conventional gasket or O-ring arrangements. Typical laboratory applications include vacuum distillation trains, Schlenk-line manifolds, freeze-drying apparatus and other glass systems that rely on plane-flange connections. The robust construction and precise geometry help maintain alignment and leak-tight performance under routine high-vacuum conditions. Suitable for research, analytical and preparative workstations that demand dependable glass vacuum interfaces.
This article is part of Hose connectors, adapters & fittings, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Diameter: 90 mm
- Finish: Fire-polished
- Sealing bed: Integrated
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Questions about HV-flat flange, 90 mm, fire polished, w
What is this article?
HV-flat flange, 90 mm, fire polished, w is the article on this page. Luminix Health distributes Witeg 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.
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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.