Description
NBR stopper in black with lower diameter 12,5 mm, upper diameter 16,5 mm and height 20 mm is a tapered rubber bung intended for sealing laboratory glassware and containers. A single central bore of 3 mm diameter permits insertion of tubing, probes or other accessories while preserving a reliable seal. Fabricated from NBR rubber, the stopper combines flexibility with resistance suitable for many common laboratory media. Packaged in units of 100 pieces and supplied by manufacturer Deutsch & Neumann, these black conical stoppers are designed for routine use in chemical, pharmaceutical and research laboratories. The conical profile provides a secure fit in necks and openings corresponding to the given diameters. Net weight per piece is 0,0039 kg. Well suited to general laboratory sealing tasks that require one 3 mm through-hole for fluid lines or sensor placement under standard conditions.
This article is part of Rubber & silicone stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 100 pc(s)
- Material: NBR rubber
- Colour: Black
- Lower diameter: 12,5 mm
- Upper diameter: 16,5 mm
- Height: 20 mm
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Questions about stopper NBR, black, bottom diameter: 12,5 mm top diameter: 16,5 mm height: 20 mm
What is this article?
stopper NBR, black, 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.