Description
Rotilabo® stoppers with hole, natural rubber, combine a sealed vessel fit with a central opening for tubing or instruments. This size features a borehole diameter of 4 mm and a bottom diameter of 17 mm, matching mid-range necks commonly found on laboratory flasks and bottles. Natural rubber delivers flexible seating and reliable contact against glass or plastic rims during repeated use. Supplied in a pack of 25 pc(s) weighing 0,210 kg, the set is practical for continuous laboratory supply. These Rotilabo® stoppers from manufacturer ROTH SELECTION support setups that need both closure and through-access in chemistry, life-science and general lab environments. The tapered form aids insertion and retention, while the defined hole maintains a clear path for connections. As part of standard stoppers and plugs consumables, they suit teaching labs, research benches and routine analytical work where consistent dimensions and straightforward natural-rubber performance are required without additional specialised coatings or grades.
This article is part of Rubber & silicone stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 25 pc(s)
- Brand: Rotilabo®
- Material: Natural rubber
- Design: Stoppers with hole
- Borehole diameter: 4 mm
- Bottom diameter: 17 mm
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Questions about Rotilabo®-stoppers w. hole, nat. rubber, Ø borehole 4 mm, Ø bottom 17 mm
What is this article?
Rotilabo®-stoppers w. hole, nat. rubber, Ø borehole 4 mm, Ø bottom 17 mm is the article on this page. Luminix Health distributes Carl Roth 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?
The technical information on this page is the manufacturer's sheet. Read that, not a rewritten specification.
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.