Description
Rotilabo® stoppers made of natural rubber are solid tapered plugs intended for closing laboratory vessels, flasks and bottles. Dimensions are a bottom diameter of 31 mm, a top diameter of 38 mm and a height of 35 mm, giving a reliable conical fit for openings in that range. Natural rubber provides resilient sealing behaviour suited to repeated handling in sample work, short-term storage and transfer operations. Each pack holds 25 pieces and weighs 0,962 kg overall, which supports efficient replenishment of common laboratory consumables. These Rotilabo® stoppers (ROTH SELECTION) form part of a graded dimensional range used across chemistry, biology and educational laboratories. Bottom and top diameters are clearly defined so users can match stoppers to glassware necks and comparable apertures with confidence. They serve as practical everyday labware for general sealing tasks where natural rubber is specified, helping standardise stopper stocks beside other plugs and clamps on the bench.
This article is part of Rubber & silicone stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 25 pc(s)
- Material: natural rubber
- Bottom diameter: 31 mm
- Top diameter: 38 mm
- Height: 35 mm
- Weight: 0,962 kg
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Questions about Rotilabo®-stoppers made of nat. rubber, Ø bottom 31 mm, Ø top 38 mm, H 35 mm
What is this article?
Rotilabo®-stoppers made of nat. rubber, Ø bottom 31 mm, Ø top 38 mm, H 35 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. Delivery across Europe, two to five days when in stock. 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.
