Description
Stopper, silicone rubber, top Ø 18 mm, bottom Ø 14 mm, H 20 mm is a tapered laboratory stopper intended for sealing flasks, bottles and similar vessels. It features an upper diameter of 18 mm, a lower diameter of 14 mm and a height of 20 mm, providing a secure conical fit in matching openings. Manufactured from silicone, the stopper offers the flexibility required for repeated insertion and removal in routine laboratory environments. Supplied in a pack of 10 pieces from manufacturer Brand, these stoppers are produced in Germany and integrate readily into standard workflows for sample storage, reaction setups and general glassware closure. The defined dimensions support consistent seating without additional adapters. As part of the silicone stopper and norm stopper category, the product suits chemical, biological and medical laboratory applications where reliable temporary or longer-term sealing of vessels is needed. Compact proportions make the stopper especially practical for smaller neck sizes while remaining easy to handle.
This article is part of Rubber & silicone stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 10 pc(s)
- Material: Silicone
- Top diameter: 18 mm
- Bottom diameter: 14 mm
- Height: 20 mm
- EAN: 4033378279675
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Questions about Stopper, silicone rubber, h. 20 mm, upper dia. 18 mm, lower dia. 14 mm
What is this article?
Stopper, silicone rubber, h. 20 mm, upper dia. 18 mm, lower dia. 14 mm is the article on this page. Luminix Health distributes Brand 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.