Description
Stopper NR grey is a solid rubber laboratory stopper with a lower diameter of 12,5 mm, an upper diameter of 16,5 mm and a height of 20 mm. Free of boreholes, this tapered bung is designed to seal laboratory glassware and vessels whose neck openings match the stated diameters. The grey rubber construction supplies the elasticity and firm seating needed for everyday use in chemistry, biology and general laboratory workflows. Available as a single unit with a net weight of 0,00403 kg, the stopper is made by manufacturer Deutsch & Neumann and belongs to the standard assortment of norm stoppers. Its conical profile running from 12,5 mm at the base to 16,5 mm at the top promotes reliable engagement, while the 20 mm height ensures sufficient contact for temporary closure of flasks, bottles and similar containers. Such solid grey rubber stoppers are routinely employed during sample handling, short-term storage and simple experimental work. Uniform geometry aids organised laboratory inventories and interchangeable application across teaching, research and quality-control environments that depend on practical rubber sealing solutions.
This article is part of Rubber & silicone stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc(s)
- Material: Rubber
- Colour: Grey
- Lower diameter: 12,5 mm
- Upper diameter: 16,5 mm
- Height: 20 mm
- Technical Information Sheet:
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Questions about stopper NR, grey, bottom diameter: 12,5 mm top diameter: 16,5 mm height: 20 mm
What is this article?
stopper NR, grey, bottom diameter: 12,5 mm top diameter: 16,5 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. 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.