Description
Cork stopper with top diameter 15 mm, bottom diameter 12 mm and length 22 mm is a tapered laboratory closure made from natural cork for sealing flasks, bottles and other open vessels in routine lab work. The conical profile allows a firm, friction fit in necks of matching size, helping to limit evaporation and contamination during storage, sampling or simple reactions. Natural cork offers a traditional, compressible sealing material that is easy to insert and remove by hand without tools. Supplied in packs of 200 pieces from manufacturer Witeg, these stoppers suit teaching laboratories, quality-control benches and general chemical or biological workflows where a straightforward cork seal is preferred. Each piece has a net weight of 0,001 kg and originates from Portugal. Dimensions are clearly defined so users can match the stopper to vessel openings with top and bottom diameters of 15 mm and 12 mm respectively and an overall length of 22 mm. Ideal for temporary closures on glassware, reagent bottles and sample containers when a reusable natural-cork option is required.
This article is part of Rubber & silicone stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 200 pc(s)
- Material: Cork
- Top diameter: 15 mm
- Bottom diameter: 12 mm
- Length: 22 mm
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Questions about Cork stopper Ø top 15mm Ø bottom 12mm length 22mm
What is this article?
Cork stopper Ø top 15mm Ø bottom 12mm length 22mm is the article on this page. Luminix Health distributes Witeg 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.