Beschrijving
Aluminium crimp caps N-20 provide robust laboratory closures for larger crimp-neck vials used in analytical chemistry, sample storage, and instrumental workflows. Each cap incorporates a blue-grey PTFE-coated butyl sealing disc, offering a PTFE contact surface toward the sample together with the resealing behaviour typical of butyl rubber. The open-hole configuration supports needle penetration for injection, withdrawal, or headspace sampling while the aluminium shell remains crimped in place. Packaged as 100 pieces, these Bördelkappen are intended for laboratories that standardise on N-20 geometry for medium-volume vials. The aluminium construction delivers a stable, reproducible crimp when used with matching N-20 crimping tools. From manufacturer Witeg, the combination of aluminium cap and PTFE-faced butyl disc is suited to routine chromatography, quality control, and general laboratory sealing tasks where chemical resistance at the septum face and reliable mechanical retention are both important. Net weight per pack is 0,186 kg. Select these hole-style N-20 aluminium crimp caps when consistent sealing performance and straightforward septum access are required across multi-sample series.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 100 pc(s)
- Product type: Aluminium crimp caps
- Cap size: N-20
- Septum: blue-grey PTFE-coated butyl disc
- Design: with hole
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Questions about Aluminum crimp caps
What is this article?
Aluminum crimp caps is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Screw caps & closures, inside Stoppers, caps & closures, in Labmateriaal.
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 Labmateriaal.
Shelves beside this one are Rubber & silicone stoppers, Ground-joint glass stoppers, Lids & seals and Closures (other).
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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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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.