Description
ND18 polypropylene screw cap is a closed laboratory closure fitted with a 1,7 mm silicone blue transparent / PTFE white septum and finished in black. The cap is intended for ND18 screw-thread vials used in analytical sample handling, storage and chromatography-related workflows. The closed design provides a continuous sealing surface, while the dual-layer septum combines the resealing behaviour of silicone with the chemical resistance of a PTFE contact face. This configuration supports reliable containment of volatile or sensitive samples when paired with matching ND18 glass or other compatible vials. Supplied in a pack of 1000 pieces, the closure suits laboratories that process large sample series and require uniform sealing performance. The polypropylene shell offers mechanical stability for routine screwing and unscrewing on the bench or in automated environments. From manufacturer Altmann Analytik, the ND18 PP screw cap with Si blue transparent/PTFE white liner is a practical consumable for general laboratory sealing tasks where a black closed cap and defined septum thickness of 1,7 mm are specified. Compatible ND18 vials complete the sealing system for everyday analytical use.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 1000 pc(s)
- Product type: ND18 screw cap, closed
- Cap material: Polypropylene (PP)
- Septum: Si blue transparent / PTFE white
- Septum thickness: 1,7 mm
- Cap colour: Black
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about ND18 PP screw cap, black, closed, 1,7mm, 10 x 100 pc
What is this article?
ND18 PP screw cap, black, closed, 1,7mm, 10 x 100 pc is the article on this page. Luminix Health distributes Altmann Analytik 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. Delivery across Europe, two to five days when in stock. 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.