Description
NR grey rubber stopper with lower diameter 56 mm, upper diameter 65 mm and height 45 mm serves as a solid laboratory closure for sealing glass and plastic vessels of matching neck size. Fabricated from durable rubber in a neutral grey colour, the tapered geometry delivers a secure friction fit that resists accidental dislodgement while allowing straightforward insertion and removal. Zero pre-drilled boreholes make the stopper suitable for applications that require a complete seal rather than passage of tubing or electrodes. Offered as one piece with a net weight of 0,1544 kg, it comes from manufacturer Deutsch & Neumann and is well suited to chemistry, biology, pharmaceutical and educational laboratories. Researchers and technicians value the combination of flexibility and firmness typical of quality rubber stoppers when closing Erlenmeyer flasks, reagent bottles or apparatus. The solid design supports repeated handling cycles and contributes to contamination control by excluding dust and moisture, providing a practical everyday solution for general-purpose sealing tasks where rubber compatibility is assured.
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: 56 mm
- Upper diameter: 65 mm
- Height: 45 mm
- Technical Information Sheet:
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Questions about stopper NR, grey, bottom diameter: 56 mm top diameter: 65 mm height: 45 mm
What is this article?
stopper NR, grey, bottom diameter: 56 mm top diameter: 65 mm height: 45 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.