Description
Conical ground joint stopper PP NS 24/29 is a hollow polypropylene stopper purpose-built for larger standard ground joints used throughout laboratory glassware. Equipped with a square grip disc and sealing rings, it provides a firm, chemically resistant closure for NS 24/29 joints on round-bottom flasks, condensers and intermediate adapters. The polypropylene construction balances toughness with low weight, while the hollow body minimises thermal mass and material usage. A four-sided grip surface enables confident handling and controlled insertion or removal, even under gloved conditions. Offered in packs of 10 pieces from manufacturer Brand, these stoppers are ready for immediate integration into existing ground-joint setups. They serve teaching labs, analytical workflows and preparative chemistry where reusable plastic stoppers offer a practical alternative to glass. Dimensional accuracy to the NS 24/29 standard guarantees interchangeability with European joint systems, supporting reliable sealing during storage, reaction or distillation steps without the fragility associated with glass counterparts.
This article is part of Ground-joint glass stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 10 pc(s)
- Material: Polypropylene (PP)
- Joint size: NS 24/29
- Design: Hollow, square grip, with sealing rings
- EAN: 4033378400758
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Questions about Conical joint stopper, PP, NS 24/29 square grip hollow seal. rings
What is this article?
Conical joint stopper, PP, NS 24/29 square grip hollow seal. rings is the article on this page. Luminix Health distributes BRAND 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.