Description
NR stopper, red is a solid rubber laboratory stopper with a lower diameter of 31 mm, an upper diameter of 38 mm and a height of 35 mm. The tapered profile allows secure seating in flasks, bottles and other glassware necks commonly used in analytical and preparative work. Made from rubber and finished in red, this stopper is supplied without boreholes (0 holes), making it suitable for airtight closure of vessels where tubing or probes are not required. Net weight is 0,03855 kg per piece, and the unit is offered as 1 pc. The dimensions support reliable sealing across a practical range of standard laboratory openings while remaining easy to insert and remove. This stopper from manufacturer Deutsch & Neumann belongs to the established range of norm and rubber stoppers used in research, quality-control and teaching laboratories. It provides a straightforward sealing solution for sample storage, reaction vessels and general wet-chemistry setups where a solid, unbored rubber plug is preferred.
This article is part of Rubber & silicone stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Material: Rubber
- Colour: Red
- Lower diameter: 31 mm
- Upper diameter: 38 mm
- Height: 35 mm
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about stopper NR, red, bottom diameter: 31 mm top diameter: 38 mm height: 35 mm
What is this article?
stopper NR, red, bottom diameter: 31 mm top diameter: 38 mm height: 35 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.