Beschrijving
Rubber stopper with top diameter 19 mm, bottom diameter 14 mm and height 21 mm is a tapered laboratory closure made from red natural rubber. The conical shape promotes a stable seal in flasks, bottles and comparable vessels used throughout general laboratory workflows. Soft natural rubber offers the flexibility needed for insertion, seating and removal while maintaining surface contact along the neck. Pack size is 25 pieces with a net weight of 0,165 kg, providing a practical quantity for routine restocking. These stoppers from manufacturer Labbox belong to the standard rubber-stopper category employed in chemistry, biology and teaching laboratories for temporary or semi-permanent closures. The solid, unbored design addresses simple sealing tasks that do not require tubing ports. Clear dimensional specification of top diameter, bottom diameter and height supports accurate matching to glassware openings. Suitable for everyday laboratory use whenever a red natural-rubber tapered plug of these dimensions is required. Uniform taper and height across the pack assist consistent sealing performance when several vessels are prepared together.
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: 19 mm
- Bottom diameter: 14 mm
- Height: 21 mm
- EAN: 8434868106833
- GTIN: 08434868106833
- Technical Information Sheet:
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Questions about Rubber stopper, solid, Øtop. 19 mm, Øbottom 14 mm, h 21 mm, 25 pcs
What is this article?
Rubber stopper, solid, Øtop. 19 mm, Øbottom 14 mm, h 21 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.