Description
Rubber stopper without bore 18 x 14 x 20 mm is a plain rubber laboratory stopper intended for sealing flasks, bottles and other vessels commonly used in scientific and medical environments. The dimensions comprise an upper diameter of 18 mm, a lower diameter of 14 mm and a height of 20 mm, creating a tapered profile that seats firmly in matching openings to provide a dependable barrier against spills and contamination. Flexible rubber construction ensures good conformity to the vessel neck while retaining sufficient firmness for repeated insertion and removal. Because the stopper contains no bore it is ideal for applications requiring an uninterrupted seal without passage for tubes, sensors or other accessories. Supplied as one piece from manufacturer Hecht, this item belongs to the familiar category of rubber stoppers utilised throughout chemistry, biology and routine laboratory practice. The durable material supports everyday handling and maintains sealing integrity over multiple uses. It is a practical choice for general laboratory closure needs where a solid, unbored rubber plug is specified.
This article is part of Rubber & silicone stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Material: Rubber
- Bore: Without bore
- Upper diameter: 18 mm
- Lower diameter: 14 mm
- Height: 20 mm
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Questions about Rubber stoppers without bore Ø mm H 18 x 14 x 20
What is this article?
Rubber stoppers without bore Ø mm H 18 x 14 x 20 is the article on this page. Luminix Health distributes Hecht 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.