Description
Stopper NR red is a solid natural-rubber laboratory stopper intended for dependable sealing of glassware and containers in chemical and analytical environments. With a lower diameter of 14 mm, an upper diameter of 18 mm and a height of 20 mm, it provides a well-proportioned taper that seats securely in matching openings. The stopper is produced from rubber in a clear red colour and comes without boreholes, guaranteeing a fully closed seal when tubing passages are not required. A net weight of 0,0046 kg ensures the piece remains easy to handle during everyday laboratory work. These norm stoppers from manufacturer Deutsch & Neumann form part of an established range of rubber stoppers employed across research, quality-control and teaching laboratories. The solid unbored design is particularly suitable for temporary or longer-term closure of bottles, flasks and tubes. Uniform dimensions promote consistent fits and reliable sealing performance in routine laboratory workflows.
This article is part of Rubber & silicone stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Material: Rubber
- Colour: Red
- Lower diameter: 14 mm
- Upper diameter: 18 mm
- Height: 20 mm
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about stopper NR, red, bottom diameter: 14 mm top diameter: 18 mm height: 20 mm
What is this article?
stopper NR, red, bottom diameter: 14 mm top diameter: 18 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.