Description
Conical cork stopper with height 26 mm, top diameter 21 mm and bottom diameter 17 mm provides a dependable closure solution for a variety of laboratory vessels. Produced from natural cork, the gently tapered design ensures a snug seal in openings of matching size while remaining simple to insert and withdraw. Cork’s compressibility delivers reliable contact with glass or plastic surfaces for everyday sealing tasks. Supplied as one piece, the stopper suits single-use replacement or specific experimental configurations. Clear dimensional specification (height × upper diameter × lower diameter) allows accurate selection against standard flask and bottle necks. This item from manufacturer IDL GmbH belongs to the well-known family of conical cork stoppers utilised in analytical, educational and quality-control laboratories. It is appropriate for temporary sealing during sample work-up, storage of dry materials or instructional demonstrations. The natural material and straightforward conical geometry make it a practical choice wherever traditional cork performance is required without additional hardware.
This article is part of Rubber & silicone stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Product type: Conical cork stopper
- Height: 26 mm
- Top diameter: 21 mm
- Bottom diameter: 17 mm
- Material: Cork
- Technical Information Sheet:
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Questions about Cork stopper, H x top Ø x bottom Ø: 26 x 21 x 17 mm, tapered
What is this article?
Cork stopper, H x top Ø x bottom Ø: 26 x 21 x 17 mm, tapered is the article on this page. Luminix Health distributes IDL GmbH 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. Delivery across Europe, two to five days when in stock. 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.