Description
Cork ring 170 x 120 mm is a laboratory support ring for holding round-bottom flasks and similar glassware securely on the bench. Outer diameter 170 mm and inner diameter 120 mm combine with a height of 30 mm to give a stable, low-profile base that cushions vessels during temporary storage, cooling, or setup work. Natural cork provides gentle contact with glass, useful thermal insulation, and a non-slip interface on hard laboratory surfaces. This cork ring from manufacturer Usbeck is a straightforward accessory for chemistry and teaching laboratories where round flasks need reliable support without clamps or stands. The 30 mm height keeps vessels close to the bench while the wide outer footprint distributes weight evenly and reduces tipping risk. Supplied as a single piece with a net weight of 0,090 kg, it suits distillation assemblies, reaction flasks, and everyday glassware handling. Durable cork construction helps protect valuable vessels from knocks and scratches during routine laboratory workflows.
This article is part of Rubber & silicone stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Product type: Cork ring
- Outer diameter: 170 mm
- Inner diameter: 120 mm
- Height: 30 mm
- Technical Information Sheet:
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Questions about Cork Ring 170 X 120 mm
What is this article?
Cork Ring 170 X 120 mm is the article on this page. Luminix Health distributes Usbeck 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.