Description
CR stopper, reddish-brown, is a tapered rubber laboratory stopper with a bottom diameter of 10,5 mm, a top diameter of 14,5 mm and a height of 20 mm. It incorporates a single central bore of 3 mm diameter, allowing tubing, thermometers or probes to pass while maintaining a secure seal. Made of rubber, the stopper provides the flexibility needed for reliable closure of flasks, bottles, tubes and other laboratory glassware. The unit has a net weight of 0,00286 kg and is supplied as one piece. Manufactured by Deutsch & Neumann, this CR series stopper is suited to everyday sealing tasks in chemical, biochemical and analytical laboratories. The reddish-brown colour aids quick visual identification within mixed stopper inventories. Its tapered profile ensures progressive seating force in openings that match the stated diameters, supporting leak-resistant containment of liquids and gases under routine laboratory conditions. Laboratories use such stoppers across standard, rubber and related sealing-accessory categories for temporary or semi-permanent closures. The compact single-bore design keeps experimental setups simple and organised while delivering consistent sealing performance.
This article is part of Rubber & silicone stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Material: Rubber
- Colour: Reddish-brown
- Bottom diameter: 10,5 mm
- Top diameter: 14,5 mm
- Height: 20 mm
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about stopper CR, redbrown, bottom diameter: 10,5 mm top diameter: 14,5 mm height: 20
What is this article?
stopper CR, redbrown, bottom diameter: 10,5 mm top diameter: 14,5 mm height: 20 is the article on this page. Luminix Health distributes Deutsch & Neumann 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. 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.