Description
Hollow stopper silicone with outer diameter 19 mm is a flexible laboratory closure manufactured from silicone. The hollow design allows secure sealing of vessels while remaining lightweight and easy to handle. Silicone offers good chemical resistance, elasticity and temperature tolerance, making these stoppers suitable for a wide range of routine laboratory applications where a reliable, reusable seal is required. With an outer diameter of 19 mm they fit correspondingly sized necks and openings. Supplied by manufacturer Deutsch & Neumann in packs of 10 pieces, the stoppers provide a practical consumable for sealing flasks, tubes and other glassware during storage, incubation or transport of samples and reagents. Their soft yet durable construction supports repeated use without compromising seal integrity under normal laboratory conditions.
This article is part of Ground-joint glass stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 10 pc(s)
- Material: Silicone
- Outer diameter: 19 mm
- Type: Hollow stopper
- Design: Hollow
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Questions about hollow-stopper Silikon, outer Ø 19 mm
What is this article?
hollow-stopper Silikon, outer Ø 19 mm is the article on this page. Luminix Health distributes Deutsch & Neumann for laboratory use. It sits in Ground-joint glass stoppers, inside Stoppers, caps & closures, in Labware.
A ground-glass stopper matches a ground neck of a stated joint size. A 14/23 stopper does not seal a 29/32 neck. The stopper is part of the flask's seal, and a chip on the grind is a leak.
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 Ground-joint glass stoppers. The catalogue is Labware.
Shelves beside this one are Screw caps & closures, Rubber & silicone 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.