Description
Solid rubber stopper with a top diameter of 15 mm, a bottom diameter of 11 mm and a length of 20 mm is a compact laboratory closure for sealing flasks, tubes and other narrow-neck vessels. Manufactured from rubber as a solid, one-piece stopper, it provides a firm, resilient fit that helps retain contents and limit evaporation or contamination during routine handling, storage and simple experimental work. The tapered profile—from 15 mm at the top to 11 mm at the base—supports reliable seating in matching openings while remaining easy to insert and remove. With a net weight of only 0,003 kg, the stopper is lightweight yet durable enough for everyday laboratory use. Supplied as a single piece from manufacturer Witeg, it belongs to the standard range of rubber stoppers used across chemistry, biology and general laboratory practice wherever a solid gum stopper of these dimensions is required. Suitable for teaching labs, research benches and quality-control environments that need a straightforward, reusable sealing component without additional fittings or bores.
This article is part of Rubber & silicone stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Material: Rubber
- Design: Solid
- Top diameter: 15 mm
- Bottom diameter: 11 mm
- Length: 20 mm
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Questions about Plug Ø top 15mm Ø bottom 11m length 20mm
What is this article?
Plug Ø top 15mm Ø bottom 11m length 20mm is the article on this page. Luminix Health distributes Witeg 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.