Description
Rubber stopper with top diameter 13 mm, bottom diameter 9 mm and height 15,5 mm is a tapered laboratory closure made from red natural rubber. The conical form is intended for sealing necks of flasks, bottles and other glassware commonly used in chemistry, biology and teaching laboratories. Over a height of 15,5 mm the stopper narrows from 13 mm at the upper face to 9 mm at the lower face, giving a friction fit suited to smaller openings. Each pack contains 25 pieces and has a net weight of 0,055 kg, making it convenient for stocking benches, student kits or shared preparation areas. These stoppers from manufacturer Labbox are produced in red natural rubber, a soft, elastic material widely chosen for routine temporary closures. They belong to the standard range of rubber stoppers used alongside cork, silicone and cellulose alternatives for everyday vessel sealing. Consistent sizing within the pack supports repeatable seating on matching glassware. The compact dimensions and multi-piece unit are practical for laboratories that need a ready supply of small natural-rubber stoppers for general experimental and educational work without specialised coating or sterility requirements.
This article is part of Rubber & silicone stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 25 pc(s)
- Material: red natural rubber
- Top diameter: 13 mm
- Bottom diameter: 9 mm
- Height: 15,5 mm
- EAN: 8434868045354
- GTIN: 08434868045354
- Technical Information Sheet:
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Questions about Rubber stopper, solid, Øtop. 13 mm, Øbottom 9 mm, h 15,5 mm, 25 pcs
What is this article?
Rubber stopper, solid, Øtop. 13 mm, Øbottom 9 mm, h 15,5 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 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.