Description
Glass stopper for NS 29/32 is a hollow clear-glass laboratory stopper designed for the tight sealing of vessels equipped with standard ground joints. Manufactured according to DIN 12 252, it delivers a dependable, reusable closure for flasks, bottles and related glassware in chemical, preparative and analytical environments. The NS 29/32 joint size aligns with common European laboratory standards, ensuring straightforward compatibility with matching necks and adapters. Clear glass allows visual inspection of contents, while the hollow form reduces weight yet maintains a stable ground-joint seal. Net weight is 0,032 kg per piece, offered as a single unit. This stopper from manufacturer Hirschmann is well suited to everyday sealing duties in research, quality-control and educational laboratories that favour glass over plastic closures. It supports vessels requiring a chemically robust, mechanically reliable seal under ordinary laboratory conditions and fits seamlessly into established NS-joint assemblies without additional adapters.
This article is part of Ground-joint glass stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Storage temperature: +5 - +40°C
- Joint size: NS 29/32
- Material: Clear glass
- Type: Hollow glass stopper
- EAN: 4049338018550
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Questions about GLASS STOPPER NS 29/32
What is this article?
GLASS STOPPER NS 29/32 is the article on this page. Luminix Health distributes Hirschmann 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.