Description
Stopcock plug with thread of SBW-J glass, ground, NS 18,8 and 4 mm bore is a solid precision component intended for laboratory glass stopcocks. Produced from borosilicate glass 3.3, it incorporates a precision-ground sealing surface and a threaded section that accepts the three-part screw lock for secure fastening. The 1:10 taper standard ensures accurate seating and dependable leak-tight performance in vacuum and pressure systems. Solid SBW-J glass plugs of this type are available in three NS sizes, each offered with two bore variants to match diverse apparatus requirements. Made by Duran/DWK Life Sciences under the DURAN® brand, the component combines high chemical resistance with robust mechanical properties suitable for frequent handling. Supplied as a single unit weighing 0,036 kg, it is ready for assembly into glassware needing an NS 18,8 threaded stopcock plug with 4 mm bore.
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
- Joint size: NS 18,8
- Bore diameter: 4 mm
- EAN: 4032051044067
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Questions about Stopcock Key, threaded, made from SBW-J glass, ground
What is this article?
Stopcock Key, threaded, made from SBW-J glass, ground 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. 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.