Description
SK N8-L N 8 PP screw cap is a black polypropylene open-top closure fitted with a PTFE red/silicone white/PTFE red laminated septum for secure sealing of N 8 laboratory vials. The multi-layer septum pairs the chemical resistance of PTFE faces with the elasticity and resealing behaviour of a silicone core, supporting needle penetration in chromatography and sample-handling workflows. Hardness is rated at 50° Shore A and septum thickness is 1,0 mm, giving a defined mechanical profile for consistent pierceability and reseal. Packaged as 100 pieces, the closure is intended for routine analytical and general laboratory use where an inert sample-contact surface is required. These caps from manufacturer Macherey-Nagel suit sample preparation, storage and transfer steps on compatible threaded vials. The black PP shell provides a robust housing while the open centre allows straightforward access with syringes or autosampler needles. Together the materials offer a practical balance of durability, chemical compatibility and sealing performance for everyday laboratory sealing tasks without unnecessary complexity.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 100 pc(s)
- Thread size: N 8
- Cap material: PP, black, open top
- Septum: PTFE red/silicone white/PTFE red
- Hardness: 50° Shore A
- EAN: 4046681089091
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Questions about SC N8-H, blk, PTFEr/Sil w/PTFEr, 50° 1.0
What is this article?
SC N8-H, blk, PTFEr/Sil w/PTFEr, 50° 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.