Description
Stopper NR, grey, with lower diameter 5 mm, upper diameter 9 mm and height 20 mm is a solid natural-rubber laboratory stopper designed for reliable closure of small flasks, tubes and apparatus necks. The conical geometry delivers a secure friction seal, while the grey rubber material combines flexibility with sufficient resilience for repeated laboratory use. Supplied without bores, the stopper provides a full, uninterrupted seal ideal where tubing or probe passages are not required. Approximate net weight is 0,00113 kg, consistent with its intermediate size within the NR grey range. It is commonly employed for sealing sample containers, reaction vessels and storage tubes in analytical chemistry, quality-control and teaching laboratories. Produced by manufacturer Deutsch & Neumann, this stopper offers standardised dimensions that simplify matching to vessel openings and support reproducible sealing behaviour. The single-piece pack format suits both individual replacement and integration into laboratory stopper assortments for everyday experimental and sample-handling tasks.
This article is part of Rubber & silicone stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc(s)
- Product type: Solid NR rubber stopper
- Colour: Grey
- Lower diameter: 5 mm
- Upper diameter: 9 mm
- Height: 20 mm
- Technical Information Sheet:
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Questions about stopper NR, grey, bottom diameter: 5 mm top diameter: 9 mm height: 20 mm
What is this article?
stopper NR, grey, bottom diameter: 5 mm top diameter: 9 mm height: 20 mm is the article on this page. Luminix Health distributes Deutsch & Neumann for laboratory use. It sits in Rubber & silicone stoppers, inside Stoppers, caps & closures, in Labware.
A rubber or silicone stopper is pushed into a mouth. The size number corresponds to a top and bottom diameter. Silicone survives higher temperatures and more autoclave cycles. Natural rubber is attacked by oils and by some solvents.
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 Rubber & silicone stoppers. The catalogue is Labware.
Shelves beside this one are Screw caps & closures, Ground-joint glass 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.
