Description
DURAN® straight stopcock, taper 1:5, with PTFE key, complete is a precision laboratory shut-off component featuring an 8 mm bore and NS 28 joint. Produced from borosilicate glass 3.3, the complete assembly includes a PTFE key that enables fully grease-free operation thanks to the polished stopcock surface. A three-part retaining system securely holds the PTFE key inside the barrel, while the larger cone angle of the 1:5 taper reliably prevents jamming during use. These characteristics make the stopcock particularly suitable for vacuum applications and for integration into glass apparatus. The item from manufacturer Duran/DWK Life Sciences is supplied as a ready-to-install glass article intended for further processing in laboratory glassware construction. It supports dependable flow control in scientific setups that require lubricant-free performance and vacuum compatibility. Offered as a single complete unit with a net weight of 0,181 kg, it provides a robust solution for building or maintaining custom glass systems in research and analytical environments where reliable shut-off functionality is essential.
This article is part of Stopcocks & valves, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Storage temperature: Standard
- Material: Borosilicate glass 3.3
- Bore diameter: 8 mm
- Joint size: NS 28
- EAN: 4032051055971
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Questions about DURAN® Single Way Stopcock, Taper 1:5, with PTFE key, complete
What is this article?
DURAN® Single Way Stopcock, Taper 1:5, with PTFE key, complete is the article on this page. Luminix Health distributes DWK Life Sciences for laboratory use. It sits in Stopcocks & valves, inside Tubing, hoses & fittings, in Labware.
A stopcock opens and closes a line, or directs it between ports. Glass stopcocks have a ground plug that needs grease or a PTFE key. The bore decides the flow. A two-way and a three-way key are different parts.
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 Stopcocks & valves. The catalogue is Labware.
Shelves beside this one are Hose connectors, adapters & fittings, PVC, PTFE & other tubing, 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 Europe, two to five days when 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.
