Description
Hexagonal stopper, polypropylene, size NS 24/29 is a laboratory closure for standard ground-glass joints in the NS 24/29 size. The stopper is produced from polypropylene and incorporates a hexagonal head that improves handling when inserting or withdrawing the piece from conical joints. Supplied in packs of 100 pieces, it supports efficient replenishment in laboratories operating several parallel setups. This article from manufacturer Hecht serves as everyday labware for sealing flasks, reaction vessels, adapters and other apparatus equipped with NS 24/29 ground joints. Polypropylene stoppers give a lightweight alternative to glass stoppers for routine closing tasks in chemical, analytical and teaching environments. The NS 24/29 dimension aligns with widely used joint geometry, supporting a secure fit for temporary holding, transfer or preparation work. The hexagonal profile enables steady hand operation without tools and clear visual orientation on the bench. As a consumable accessory, the stopper helps keep open necks covered during laboratory workflows. Consistent pack sizing assists standardised glassware stocks in research, quality control and training laboratories where NS 24/29 connections are standard.
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 24/29
- Head shape: Hexagonal
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Questions about PP stoppers hexagonal, Size: NS 24/29
What is this article?
PP stoppers hexagonal, Size: NS 24/29 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.

