Description
Aluminium push-on caps measuring 18x30 mm serve as dependable closures for test tubes, culture vessels and related laboratory glassware. These aluminium caps, commonly used as Kapsenberg-style or culture caps, deliver a firm push-on seal that shields samples from airborne contaminants while still allowing controlled gas exchange needed for many microbiological cultures. Produced from sturdy aluminium, they tolerate autoclaving and routine chemical exposure encountered in daily lab practice. Offered in a pack of 100 pieces from manufacturer schuett biotec, the caps are well suited to microbiology, cell-culture, clinical and general research environments. The 18x30 mm size accommodates a broad range of standard tube diameters, ensuring consistent fit without clips or additional hardware. Their lightweight yet resilient construction permits repeated use and easy cleaning, supporting efficient laboratory routines. By replacing loose plugs or foil wraps, these caps help reduce contamination risk and simplify sample handling during incubation, short-term storage and transport of cultures or reagents.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 100 pc(s)
- Product type: Aluminium push-on caps
- Dimensions: 18x30 mm
- Material: Aluminium
- Technical Information Sheet:
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Questions about ALU-STECK-caps, 18x30 mm (qty=100)
What is this article?
ALU-STECK-caps, 18x30 mm (qty=100) is the article on this page. Luminix Health distributes Schuett-Biotec 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.
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.