Description
Silicone stopper with top diameter 19 mm, bottom diameter 14,3 mm and height 25,4 mm is a tapered laboratory closure for sealing flasks, tubes and other glassware in routine research and analytical work. Made from brown silicone, it combines elasticity with a secure fit that supports repeated insertion and removal without damaging vessel necks. The material is temperature-resistant from −70 °C to 200 °C, allowing use in cold-storage steps as well as moderate heating procedures common in chemistry and life-science laboratories. Offered as a pack of 25 pieces from manufacturer Labbox, these stoppers suit general-purpose sealing tasks where a flexible, chemically tolerant plug is preferred over rigid alternatives. The tapered geometry (19 mm at the top narrowing to 14,3 mm at the bottom) helps achieve a tight seat in standard openings while remaining easy to handle. With a net weight of 0,167 kg per pack, the set provides a practical stock of reusable brown silicone stoppers for everyday bench work, sample holding and temporary vessel closure in teaching, quality-control and research environments.
This article belongs on Rubber & silicone stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 25 pc(s)
- Material: Brown silicone
- Top diameter: 19 mm
- Bottom diameter: 14,3 mm
- Height: 25,4 mm
- EAN: 8434868045521
- GTIN: 08434868045521
- Technical Information Sheet:
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Questions about Silicone stopper, solid, Øtop 19mm, Øbottom 14,3 mm, h 25,4 mm, 25 pcs
What is this article?
Silicone stopper, solid, Øtop 19mm, Øbottom 14,3 mm, h 25,4 mm, 25 pcs is the article on this page. Luminix Health distributes Labbox for laboratory use. It sits in Rubber & silicone stoppers, inside Stoppers, caps & closures, in Matériel de laboratoire.
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 Matériel de laboratoire.
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.