Description
SKB N24-kL is a bonded N 24 polypropylene screw cap in white with a closed design and an integrated silicone white/PTFE beige septum. The septum hardness is 45° shore A and the septum thickness is 3,2 mm, giving a consistent sealing layer for N 24-threaded laboratory bottles and vials. Delivered in packs of 100 pieces, the bonded liner remains seated in the cap during storage, transport and repeated opening cycles. This closed-top format from manufacturer Macherey-Nagel is suited to workflows that need a continuous barrier rather than centre access, helping protect contents from dust and evaporation under normal laboratory conditions. The white PP exterior supports easy visual sorting, while the silicone/PTFE septum pairing balances elasticity and chemical contact performance. Laboratories that standardise on N 24 screw closures can use SKB N24-kL wherever a bonded, closed white cap with defined septum geometry is specified for sample integrity and routine handling.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 100 pc(s)
- Cap type: N 24 PP screw cap (bonded), closed
- Colour: White
- Septum: Silicone white/PTFE beige
- Hardness: 45° shore A
- EAN: 4046681089213
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Questions about SCB N24-nH, w, Sil w/PTFE bg, 45°, 3.2
What is this article?
SCB N24-nH, w, Sil w/PTFE bg, 45°, 3.2 is the article on this page. Luminix Health distributes Macherey-Nagel 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.

