Description
Labocap aluminium closure 21-23 mm is an aluminium sealing cap for culture glasses with a neck diameter of 21–23 mm. This Labocap closure is made from aluminium and is intended for culture glassware whose neck opening falls in the 21–23 mm range, serving as a metal crimp-style cap in laboratory use. With a net weight of 0,006 kg, the aluminium body stays lightweight while offering a durable metal seal for culture vessels. The product is part of the Labocap aluminium closure range (Alukappen / Bördelkappen) for culture glasses and matches the stated 21–23 mm neck-Ø. From manufacturer Witeg, the Labocap aluminium closure supports reliable closing of compatible culture bottles and similar glass containers. Laboratories that standardise on culture glasses with 21–23 mm necks can specify this size when an aluminium Labocap is required. The unit quantity is 1 pc, so the closure can be ordered individually together with other Labocap aluminium sizes for neighbouring neck diameters. Country of origin is Switzerland. The text reflects only the aluminium construction, neck fit and culture-glass use given in the manufacturer data.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Product type: Labocap aluminium closure
- Material: Aluminium
- Neck diameter: 21-23 mm
- Suitable for: Culture glasses
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Questions about Labocap-Closures Alu 21-23
What is this article?
Labocap-Closures Alu 21-23 is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Screw caps & closures, inside Stoppers, caps & closures, in Labware.
A screw cap has a thread and a liner. The thread has to match the bottle. The liner has to survive the liquid: a pulp liner fails in a solvent that a PTFE-faced liner ignores. The colour of the cap is not the specification.
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 Screw caps & closures. The catalogue is Labware.
Shelves beside this one are Rubber & silicone stoppers, 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.
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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.