Description
Rotilabo® stoppers with hole, natural rubber, are laboratory plugs featuring a central borehole for tubing or accessory feed-through while sealing the vessel neck. Specifications include a borehole diameter of 3 mm and a bottom diameter of 12,5 mm, suited to small-to-medium openings that need both closure and a defined passage. Natural rubber provides the resilience required for a tight temporary seal and stable seating of thin lines or probes in the bored channel. Supplied in a pack of 25 pc(s) with a weight of 0,100 kg, the set is practical for laboratories that maintain multiple identical stoppers. These Rotilabo® stoppers from manufacturer ROTH SELECTION belong to the stoppers and plugs assortment for research, teaching and routine bench work. The natural-rubber body with a 3 mm hole supports straightforward assemblies where a sealed neck must still allow passage of gas, liquid or sensor tubing. Use this size when a natural-rubber stopper with a 3 mm borehole and 12,5 mm bottom diameter is required.
This article is part of Rubber & silicone stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 25 pc(s)
- Material: natural rubber
- Design: with hole
- Borehole diameter: 3 mm
- Bottom diameter: 12,5 mm
- Weight: 0,100 kg
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Questions about Rotilabo®-stoppers w. hole, nat. rubber, Ø borehole 3 mm, Ø bottom 12.5 mm
What is this article?
Rotilabo®-stoppers w. hole, nat. rubber, Ø borehole 3 mm, Ø bottom 12.5 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.

