Description
Standard silicone rubber stopper, Ø 8 × 12 mm, height 20 mm is a translucent laboratory stopper for reliable sealing of flasks, bottles and other vessels with matching openings. It has a lower diameter of 8 mm, an upper diameter of 12 mm and a height of 20 mm, so it seats cleanly in standard laboratory glassware and sample containers used in analytical and preparative work. The silicone is chemically and biologically neutral and food-safe according to BfR Recommendation XV and FDA § 177.2600. Temperature resistance spans −60 °C to +200 °C and briefly up to +230 °C, supporting cold handling as well as moderate heating steps. The stoppers are sterilizable and toxicologically sound, which suits hygienic workflows in research, quality control and process laboratories. Offered as a single piece from manufacturer Bürkle, this norm stopper provides an inert, resilient silicone closure where food-contact compatibility and dimensional fit matter. Net weight is 0,001 kg per piece, convenient for routine laboratory stocking and inventory control across everyday sealing tasks.
This article is part of Rubber & silicone stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Material: Silicone
- Bottom diameter: 8 mm
- Top diameter: 12 mm
- Height: 20 mm
- EAN: 4067722026769
- Technical Information Sheet:
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Questions about Standard bung silicone, Ø 8x12 mm, height 20mm
What is this article?
Standard bung silicone, Ø 8x12 mm, height 20mm is the article on this page. Luminix Health distributes Bürkle 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.