Description
HV plane flange 50 mm is a fire-polished laboratory plane flange with a nominal diameter of 50 mm intended for glass vacuum apparatus and related laboratory assemblies. The flange is supplied with an integrated sealing bed that accommodates a gasket on the flat sealing face. Offered as a single piece with a net weight of 0,218 kg, it provides a defined plane interface for connection to matching HV plane flanges. This component from manufacturer Witeg receives a fire-polished finish to produce a smooth contact surface suitable for laboratory glassware work. The 50 mm size belongs to the plane-flange range used when building or extending glass vacuum lines, manifolds and transfer setups. Its sealing-bed geometry supports clear alignment and seating of appropriate seals during assembly. Originating from Germany, the flange is ready for integration into existing laboratory glass systems that follow the HV plane-flange format. The combination of fire-polished finish and sealing bed makes this 50 mm plane flange a practical part for routine laboratory glass construction and adaptation tasks.
This article is part of Hose connectors, adapters & fittings, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Nominal diameter: 50 mm
- Finish: Fire-polished
- Design: With sealing bed
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Questions about HV-flat flange, 50 mm, fire polished, w
What is this article?
HV-flat flange, 50 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.


