Description
Hexagonal stopper, polypropylene, size NS 19/26 is a laboratory closure intended for standard ground-glass joints of the NS 19/26 format. Manufactured from polypropylene, it combines a conical sealing body with a hexagonal head for convenient finger grip when fitting or removing the stopper. The product is offered in a pack of 100 pieces, suited to busy benches, teaching collections and shared instrument rooms. This stopper from manufacturer Hecht is used to close flasks, condensers, adapters and related glassware that carry NS 19/26 joints. Polypropylene construction provides a light, durable option where a plastic stopper is preferred over glass for routine laboratory work. Matching the NS 19/26 joint standard supports a reliable fit on compatible apparatus during sample preparation, short-term storage or transfer steps. The hexagonal head permits controlled hand tightening without tools and reduces slip compared with smooth round tops. As part of standard laboratory consumables, these stoppers help maintain covered necks on open glassware. Uniform sizing throughout the pack simplifies inventory for research, quality-control and educational laboratories that rely on NS 19/26 connections.
This article is part of Ground-joint glass stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 100 pc(s)
- Product type: Hexagonal stopper
- Material: Polypropylene
- Joint size: NS 19/26
- Head shape: Hexagonal
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Questions about PP stoppers hexagonal, Size: NS 19/26
What is this article?
PP stoppers hexagonal, Size: NS 19/26 is the article on this page. Luminix Health distributes Hecht for laboratory use. It sits in Ground-joint glass stoppers, inside Stoppers, caps & closures, in Labware.
A ground-glass stopper matches a ground neck of a stated joint size. A 14/23 stopper does not seal a 29/32 neck. The stopper is part of the flask's seal, and a chip on the grind is a leak.
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 Ground-joint glass stoppers. The catalogue is Labware.
Shelves beside this one are Screw caps & closures, Rubber & silicone 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.