Beschrijving
Rubber stopper with top diameter 16,5 mm, bottom diameter 13 mm and height 20 mm is a tapered laboratory closure manufactured from red natural rubber. The conical profile is designed to seat securely in flasks, bottles and other glassware with matching neck openings during routine laboratory handling. Natural rubber supplies the elasticity required for reliable contact and repeated use without specialised coatings. Each pack contains 25 pieces and has a net weight of 0,120 kg, supporting efficient replenishment of common bench consumables. These stoppers from manufacturer Labbox form part of the standard rubber-stopper assortment for chemistry, biology and educational laboratories. The solid, unbored construction is intended for straightforward sealing where no gas or liquid tubing passage is needed. Defined top and bottom diameters together with the 20 mm height allow clear size selection against glassware apertures. Suitable for everyday laboratory sealing applications that call for a red natural-rubber tapered plug of intermediate dimensions. Consistent geometry across the pack helps maintain uniform fit when multiple vessels are closed at the same time.
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: 16,5 mm
- Bottom diameter: 13 mm
- Height: 20 mm
- EAN: 8434868106796
- GTIN: 08434868106796
- Technical Information Sheet:
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Questions about Rubber stopper, solid, Øtop. 16,5 mm, Øbottom 13 mm, h 20 mm, 25 pcs
What is this article?
Rubber stopper, solid, Øtop. 16,5 mm, Øbottom 13 mm, h 20 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 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.