Description
NR grey rubber stopper with lower diameter 18 mm, upper diameter 24 mm and height 30 mm is a conical laboratory stopper for sealing flasks, bottles and other vessels. It incorporates two bores of 4 mm diameter that accept tubing, probes or similar accessories used in chemical and biological workflows. Made from rubber in grey colour, the stopper provides the elasticity required for temporary or semi-permanent closure of laboratory glassware and plasticware. Supplied in packs of 100 pieces from manufacturer Deutsch & Neumann, each unit has a net weight of 0,01269 kg. The tapered geometry, reducing from 24 mm at the top to 18 mm at the bottom over a height of 30 mm, allows straightforward insertion and removal while achieving a snug fit in plain or ground necks. These stoppers are suited to sample preparation, vessel closure, gas-inlet arrangements and multi-port reaction set-ups in research, analytical and teaching laboratories. Consistent dimensions support reproducible sealing across routine experimental work.
This article is part of Rubber & silicone stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 100 pc(s)
- Material: Rubber
- Colour: Grey
- Lower diameter: 18 mm
- Upper diameter: 24 mm
- Height: 30 mm
- Technical Information Sheet:
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Questions about stopper NR, grey, bottom diameter: 18 mm top diameter: 24 mm height: 30 mm
What is this article?
stopper NR, grey, bottom diameter: 18 mm top diameter: 24 mm height: 30 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. 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.