Description
DURAN® hexagonal hollow stopper, pointed and DG-ground in joint size NS 34/35 is a precision hollow glass stopper for securely closing laboratory vessels with standard ground joints. Made from borosilicate glass 3.3, it delivers the chemical resistance and thermal stability required for everyday laboratory glassware. These stoppers seal volumetric flasks, mixing cylinders, ground-joint flasks and similar apparatus. The diamond-ground (DG) finish provides an accurate fit corresponding to DURAN® conical joints. Its pointed design includes a drip tip that allows condensate to be collected and returned to the reaction medium, supporting clean process handling. Hexagonal hollow stoppers are available in pointed and flat variants with sizes matched to standard DURAN® joints. This model from manufacturer Duran/DWK Life Sciences combines reliable sealing with convenient handling via the hexagonal head. Supplied as a single piece, it is suited to analytical chemistry, synthesis work and general laboratory applications requiring dependable ground-joint closures.
This article is part of Ground-joint glass stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Storage temperature: Standard
- Joint size: NS 34/35
- Material: Borosilicate glass 3.3
- Grind quality: DG (diamond ground)
- EAN: 4032051045804
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Questions about DURAN® Hexagonal Stopper pointed, diamond-ground
What is this article?
DURAN® Hexagonal Stopper pointed, diamond-ground 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.