Description
Hollow replacement plug NS 29 is a Type N laboratory stopcock plug for standardised NS 29 ground joint connections. Supplied in a hollow, ground finish without a threaded stopcock lock, it offers a 10 mm bore and complies with DIN 12541. This single-piece component has a net weight of 0,046 kg and is intended as a direct replacement for worn or damaged plugs in laboratory stopcock assemblies. The ground hollow construction provides the seating surface and reduced mass required for dependable fit in matching glassware barrels. Available from manufacturer Witeg, the plug supports service and repair of stopcocks used in fluid handling, larger reaction vessels, vacuum apparatus and general chemical glassware. The NS 29 joint size corresponds to common European laboratory standards, allowing straightforward interchange on multi-neck flasks, adapters and stopcock bodies. Laboratories working to DIN 12541 can restore consistent flow through the 10 mm bore by installing this Type N hollow ground plug. It is suitable for research, preparative and quality-control environments that maintain glass stopcock systems and require a precise hollow plug without threaded lock hardware.
This article is part of Ground-joint glass stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc(s)
- Type: N
- Joint size: NS 29
- Design: Hollow, ground finish
- Bore diameter: 10 mm
- Stopcock lock: Without threaded lock
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Questions about ST-seperate plug hollow ST 29
What is this article?
ST-seperate plug hollow ST 29 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. 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.