Description
Poly stopper for NS 45/40 is a laboratory stopper made from low-density polyethylene (LDPE) for closing vessels fitted with a standard ground joint of size NS 45/40. The polyethylene construction provides a lightweight, practical seal for flasks and other ground-joint glassware in everyday laboratory use. Intended for vessel closure, this poly stopper from manufacturer Hirschmann offers a convenient alternative where a plastic stopper is preferred over glass. It is supplied as a single piece with a net weight of 0,019 kg and is compatible with matching NS 45/40 joints on laboratory apparatus. LDPE material supports reliable handling during routine sealing tasks and helps protect contents from dust and spillage under normal lab conditions. The defined joint size ensures a proper fit on corresponding glassware, making the stopper suitable for general chemical and analytical workflows that require quick, repeatable closure of ground-joint vessels without the weight of hollow glass stoppers.
This article is part of Ground-joint glass stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Storage temperature: +5 - +40 °C
- Material: LDPE (low-density polyethylene)
- Joint size: NS 45/40
- EAN: 4049338018482
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Questions about POLY STOPPER NS 45/40
What is this article?
POLY STOPPER NS 45/40 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. Delivery across Europe, two to five days when in stock. 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.
