Description
SK N9-L is an N 9 polypropylene screw cap with centre hole, supplied in black and equipped with a silicone white/PTFE red septum. The septum hardness is 45° Shore A at a thickness of 1,0 mm, offering a defined sealing profile for vial-based analytical work. Packaged in units of 100 pieces, these open screw closures match N 9 screw-neck vials used in HPLC, GC sample introduction and general laboratory storage of liquid samples. The polypropylene cap body delivers a firm threaded seal, while the PTFE-faced silicone septum supports chemical compatibility and needle penetration through the open top. From manufacturer Macherey-Nagel, this black SK N9-L variant is suited to laboratories that prefer dark colour coding for quick identification alongside other cap colours. The centre hole permits direct syringe access without uncapping, helping streamline autosampler and manual injection routines. With a clearly stated septum hardness and thickness, the closure provides a practical, repeatable option for routine chromatographic and sample-prep applications where consistent N 9 screw-cap performance is required.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 100 pc(s)
- Product type: N 9 PP screw cap with hole
- Colour: Black
- Septum: Silicone white/PTFE red
- Hardness: 45° Shore A
- EAN: 4046681089466
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Questions about SC N9-H, blk, Sil w/PTFE r, 45°, 1.0
What is this article?
SC N9-H, blk, Sil w/PTFE r, 45°, 1.0 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.
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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.