Description
DURAN® Hexagonal Hollow Stopper with short ground joint NS 29/22 is a flat, ground hollow glass stopper designed for secure closure of laboratory vessels fitted with standard ground joints. Produced from borosilicate glass 3.3, it delivers the chemical resistance and thermal performance expected in routine laboratory environments. The short ground joint variant is specifically matched to DURAN® short ground joint sockets, ensuring a precise and reliable fit. Its hexagonal outer profile allows convenient manual handling and seating, while the flat top and hollow construction keep the stopper lightweight yet robust. Ground joint quality supports tight sealing against contamination or evaporation. Typical applications include closing volumetric flasks, mixing cylinders, ground-joint flasks and other apparatus that use standardised short ground joints. This stopper from manufacturer Duran/DWK Life Sciences is supplied as a single piece with a net weight of 0,025 kg and integrates smoothly into existing DURAN® glassware systems for everyday sealing tasks in analytical, preparative and educational laboratories.
This article is part of Ground-joint glass stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Storage temperature: Standard
- Material: Borosilicate glass 3.3
- Joint size: NS 29/22
- Design: Short ground joint, flat, ground
- EAN: 4032051046481
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Questions about DURAN® Hexagonal Stopper short ground, flat, finished
What is this article?
DURAN® Hexagonal Stopper short ground, flat, finished is the article on this page. Luminix Health distributes DWK Life Sciences 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.