Description
Hexagonal hollow stopper, NS 45/40, closed pointed is a laboratory glassware stopper intended for larger standard ground joints. Fabricated from borosilicate glass 3.3, the Form C design features a hexagonal outer profile for firm grip, a hollow construction and a pointed closed end that delivers a tight seal. The NS 45/40 joint size is compatible with corresponding flasks, adapters and reaction vessels used in preparative chemistry. Borosilicate glass 3.3 offers excellent resistance to thermal shock and chemical attack, supporting repeated use with acids, bases and organic solvents. The item is supplied as 1 pc and has a net weight of 0,087 kg. Produced in Germany by manufacturer Rettberg, this stopper is appropriate for distillation, reflux and storage applications in research, industrial and teaching laboratories. The pointed closed form provides complete closure without additional components, while the hexagonal head permits straightforward manual operation even when gloves are worn.
This article is part of Ground-joint glass stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Product type: Standard ground joint stopper
- Joint size: NS 45/40
- Material: Borosilicate glass 3.3
- Form: C, pointed closed
- Technical Information Sheet:
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Questions about Hexagonal stopper, size 45/40, glass, hollow, pointed
What is this article?
Hexagonal stopper, size 45/40, glass, hollow, pointed is the article on this page. Luminix Health distributes Rettberg 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.