Description
Hollow glass stopper NS 45/40 is a clear glass laboratory stopper intended for the tight sealing of vessels fitted with a matching standard ground joint. Produced as a hollow clear-glass stopper to DIN 12252, it provides a precise ground-glass fit for flasks and other jointed glassware that use the NS 45/40 size. The hollow design keeps the component lighter while retaining the mechanical stability needed for repeated seating and removal in daily laboratory work. With joint size NS 45/40 it aligns with larger laboratory vessels used in synthesis, sample storage, and general chemical handling. Supplied as one piece with a net weight of 0,843 kg, it serves as a dedicated closure or spare for ground-joint systems. This stopper from manufacturer Hirschmann supports reliable sealing when correctly seated on a clean, dry joint surface, without reliance on auxiliary sealing media. Clear glass permits visual checks of the joint interface and of vessel contents where transparency is required. Suitable for research, quality-control, and teaching laboratories that standardise on DIN ground joints and need consistent interchangeability across glassware sets.
This article is part of Laboratory glass bottles, in Bottles & containers.
Key features
- Pack size: 1 pc
- Storage temperature: +5 - +40°C
- Joint size: NS 45/40
- Material: Clear glass (unspecified)
- Type: Hollow glass stopper
- EAN: 4049338018574
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Questions about GLASS STOPPER NS 45/40
What is this article?
GLASS STOPPER NS 45/40 is the article on this page. Luminix Health distributes Hirschmann for laboratory use. It sits in Laboratory glass bottles, inside Bottles & containers, in Labware.
A laboratory glass bottle is borosilicate or soda-lime, with a stated capacity and a neck for a screw cap or a ground stopper. Glass is the choice when the liquid attacks a plastic, or when the bottle will be heated or autoclaved.
A laboratory bottle is a closed container with a stated volume and a neck that takes a cap, a stopper or a dispenser. Borosilicate glass is the choice when the liquid is a solvent, or when the bottle will be heated or autoclaved. Polyethylene and polypropylene are the choice when the bottle must not shatter, or when hydrofluoric acid would attack glass. A narrow mouth pours. A wide mouth is for powders and for reaching the bottom. Laboratory ware of this kind is indexed under ISO laboratory glassware. Traceable volume sits with the BIPM and NIST Physical Measurement.
Which category should I open next?
The category is Bottles & containers. The sub-category is Laboratory glass bottles. The catalogue is Labware.
Shelves beside this one are Plastic bottles (narrow & wide mouth), Sample containers & jars, Canisters & jerrycans, Wash bottles and Bottle accessories (pouring rings, dispensers, caps).
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.
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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.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.