Description
2-Way stopcock according to Schiff with hollow plug NS 14,5 is a precision glass laboratory valve designed for controlled flow switching in chemical apparatus. It features a hollow NS glass plug measuring 9 × 100 mm and a bore of 2,5 mm, manufactured to DIN 12545. The conical ground joint NS 14,5 ensures a reliable, leak-resistant seal when integrated into standard laboratory glassware setups. Supplied as a single piece with a net weight of 0,052 kg, this stopcock is well suited for vacuum lines, distillation assemblies, and general fluid-handling systems where two-way routing is required. The hollow-plug design reduces thermal mass and facilitates smooth rotation under vacuum or atmospheric conditions. Produced by manufacturer Witeg, the component meets established dimensional standards for interchangeable ground-glass joints, supporting reproducible connections across multi-piece apparatus. Ideal for research, analytical and preparative laboratories that rely on durable borosilicate glass stopcocks for precise media control.
This article is part of Ground-joint glass stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Joint size: NS 14,5
- Plug dimensions: 9 x 100 mm
- Bore diameter: 2,5 mm
- Standard: DIN 12545
- Design: Hollow NS glass plug
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Questions about Stopcock double bore hollow plug ST 14,5
What is this article?
Stopcock double bore hollow plug ST 14,5 is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Ground-joint glass stoppers, inside Stoppers, caps & closures, in Labware.
A ground-glass stopper matches a ground neck of a stated joint size. A 14/23 stopper does not seal a 29/32 neck. The stopper is part of the flask's seal, and a chip on the grind is a leak.
A closure is the part that decides whether a bottle stays shut and whether the contents attack the seal. A ground-glass stopper matches a ground neck. A screw cap needs the right thread and a liner that survives the liquid. Rubber and silicone stoppers push into a mouth. The liner, not the colour of the cap, is the chemical choice. The vessels they close are indexed under ISO laboratory glassware.
Which category should I open next?
The category is Stoppers, caps & closures. The sub-category is Ground-joint glass stoppers. The catalogue is Labware.
Shelves beside this one are Screw caps & closures, Rubber & silicone stoppers, Lids & seals and Closures (other).
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.