Description
Ground joint stopper NS 7/16 is a laboratory closure for standard ground-glass joints in analytical and preparative glassware setups. Manufactured from low-density polyethylene (LDPE), it provides a practical plastic alternative to glass stoppers for sealing flasks, adapters, and related apparatus with NS 7/16 joints. The stopper features an octagonal grip for secure handling when fitting or removing the plug, together with a red insert plate that aids quick visual identification on the bench. Polyethylene construction offers chemical resistance suited to many common laboratory solvents and reagents while remaining lightweight and break-resistant compared with glass. Supplied for a minimum order quantity of 100 pieces and packed as 100 pc(s), these stoppers from manufacturer Marienfeld support efficient stocking of teaching laboratories, quality-control suites, and production-support labs that standardise on NS jointware. Ideal for routine sealing tasks where a durable, easy-to-grip plastic stopper is preferred.
This article is part of Ground-joint glass stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 100 pc(s)
- Joint size: NS 7/16
- Material: Low-density polyethylene (LDPE)
- Grip: Octagonal with red insert plate
- Product type: Ground joint stopper
- EAN: 4250317313522
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Questions about Standard ground joint stoppers NS 7/16,
What is this article?
Standard ground joint stoppers NS 7/16, is the article on this page. Luminix Health distributes Marienfeld 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.