Description
Ground joint stopper, hexagonal, 19/26 is a conical laboratory stopper produced from borosilicate glass LBG 3.3 for standard ground joints of size 19/26. Its hexagonal head facilitates controlled handling, while the conical ground profile ensures a secure fit in flasks, condensers and intermediate adapters of matching taper. Supplied as one piece with a net weight of 0,012 kg, the stopper serves as a durable glass closure for medium-scale laboratory glassware. LBG 3.3 borosilicate construction supports the chemical and thermal demands of routine preparative and analytical procedures. Available from manufacturer Labbox, this hexagonal stopper is suited to organic synthesis setups, distillations, extractions and general sample containment where a reusable glass seal is required. The 19/26 joint size is a widely used intermediate format in teaching and research laboratories, allowing straightforward integration into existing NS joint assemblies. The conical geometry promotes consistent seating without auxiliary seals, making the piece a practical spare or expansion item for standard glassware kits used across chemical workflows.
This article is part of Ground-joint glass stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Joint size: 19/26
- Head design: Hexagonal
- Form: Conical
- Material: Borosilicate glass LBG 3.3
- EAN: 8434868061415
- GTIN: 08434868061415
- Technical Information Sheet:
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Questions about Hollow stopper, hexagonal head, LBG 3.3, 19/26
What is this article?
Hollow stopper, hexagonal head, LBG 3.3, 19/26 is the article on this page. Luminix Health distributes Labbox 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.