Beschrijving
Rubber stopper with a top diameter of 49,5 mm, a bottom diameter of 40 mm and a height of 40,5 mm is a tapered laboratory closure for sealing flasks, bottles and other glassware. Produced from red natural rubber, it provides elasticity for a snug fit in standard vessel necks and remains easy to insert or withdraw during everyday procedures. The conical profile spans openings between the stated bottom and top diameters, supporting use across mixed glassware in chemical, analytical and teaching laboratories. Each pack contains 10 pieces with a net weight of 0,910 kg, offering a practical stock quantity for continuous bench work. These stoppers from manufacturer Labbox suit temporary sample storage, simple apparatus assembly and general sealing tasks where classic rubber closures are preferred. Natural rubber supplies the compressibility needed for repeated seating. Research groups, educational laboratories and quality-control units benefit from consistent pack dimensions. The solid format integrates readily into laboratory consumable inventories for routine short-term containment.
This article is part of Rubber & silicone stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 10 pc(s)
- Material: red natural rubber
- Top diameter: 49,5 mm
- Bottom diameter: 40 mm
- Height: 40,5 mm
- EAN: 8434868106789
- Technical Information Sheet:
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Questions about Rubber stopper, solid, Øtop. 49,5 mm, Øbottom 40 mm, h 40,5 mm, 10 pcs
What is this article?
Rubber stopper, solid, Øtop. 49,5 mm, Øbottom 40 mm, h 40,5 mm, 10 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 Labmateriaal.
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 Labmateriaal.
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.