Beschreibung
Silicone stopper with an upper diameter of 29,0 mm, a lower diameter of 23,0 mm and a length of 30 mm is a transparent, flexible laboratory closure for sealing flasks, tubes and other glassware. Made from silicone, it combines chemical resistance with elasticity, allowing a secure yet removable fit across a useful taper range. The conical profile supports reliable sealing of openings between the stated upper and lower diameters, helping to limit evaporation and contamination during sample handling, storage or simple reactions. Supplied in packs of 10 pieces, these stoppers suit routine work in analytical, teaching and research laboratories where reusable, soft-sealing closures are preferred. The net weight is 0,016 kg per unit. This silicone stopper from manufacturer Witeg belongs to the standard stopper range used alongside cork, rubber and cellulose alternatives, offering a clear, flexible option for everyday laboratory sealing tasks without hard or brittle contact surfaces.
This article is part of Rubber & silicone stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 10 pc(s)
- Material: Silicone
- Upper diameter: 29,0 mm
- Lower diameter: 23,0 mm
- Length: 30 mm
- Appearance: Transparent, flexible
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Questions about Silicone plug O-Ø 29.0mm U-Ø 23.0mm length 30mm
What is this article?
Silicone plug O-Ø 29.0mm U-Ø 23.0mm length 30mm is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Rubber & silicone stoppers, inside Stoppers, caps & closures, in Laborbedarf.
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 Laborbedarf.
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.