Description
Threaded tube GL25 constricted is a precision glass laboratory component intended for attachment and connection work in chemical, analytical and process setups. It carries a GL 25 ISO thread, a constricted profile and dimensions of 26 × 110 × 2,0 mm in accordance with DIN 12216. The constricted geometry supports secure joining to complementary glassware, caps and adapters while helping to define controlled flow paths in custom assemblies. Supplied as a single piece with a net weight of 0,038 kg, the tube is well suited to building reaction lines, sampling paths and modular glass systems where standardized GL threading is required. Produced by manufacturer Witeg, it offers dimensional consistency for laboratory glass tubing applications. The ISO thread ensures broad compatibility with common GL 25 closures and connectors used throughout research, quality-control and development laboratories. Ideal for glass-tube, quartz-tube and KPG-style constructions, this constricted threaded tube provides a reliable, standards-based element for everyday laboratory apparatus work.
This article is part of Hose connectors, adapters & fittings, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Thread size: GL 25
- Design: Constricted
- Thread type: ISO thread
- Dimensions: 26 x 110 x 2,0 mm
- Standard: DIN 12216
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Questions about tube GL with restriction
What is this article?
tube GL with restriction 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.
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.