Description
Hollow NS stopper, DURAN® NS 10/19 is a precision ground-joint laboratory stopper intended for secure closure of glassware fitted with standard NS 10/19 joints. Produced from durable borosilicate glass 3.3, the stopper delivers high chemical resistance and good thermal shock performance required in daily laboratory operations. The DURAN® glass ensures accurate joint geometry and a reliable seal for flasks, condensers and reaction apparatus used in synthesis, distillation and sample preparation. Offered as a single unit from manufacturer Hecht, the hollow construction lowers mass while preserving structural integrity. The finely ground surface creates a tight, interchangeable fit that minimises leakage under normal working conditions. This stopper is well suited to research, educational and industrial laboratories needing standardised glassware components. Borosilicate 3.3 material tolerates common cleaning, sterilisation and temperature cycles, contributing to extended service life and reproducible results with a broad spectrum of solvents and reagents.
This article is part of Ground-joint glass stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc(s)
- Product type: Hollow NS stopper
- Joint size: NS 10/19
- Material: Borosilicate glass 3.3
- Brand: DURAN®
- Design: Hollow
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Questions about Stoppers hollow, DURAN®, interchangeable NS 10/19
What is this article?
Stoppers hollow, DURAN®, interchangeable NS 10/19 is the article on this page. Luminix Health distributes Hecht 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.