Description
Brown glass stoppers, DURAN® provide semi-hollow standard taper closures for laboratory vessels fitted with 29/32 ground joints. Conforming to DIN 12252 and finished with an octagonal head, they offer a firm grip for insertion and removal while maintaining the geometry expected of interchangeable laboratory glass joints. Brown DURAN® glass is suited to everyday sealing of flasks, bottles and apparatus where light protection or standard brown-glass aesthetics are preferred alongside chemical durability. The stoppers are packed as 10 pc(s) per unit, supporting efficient replenishment in teaching, quality-control and research laboratories that standardise on 29/32 joints. Pack weight is 0,690 kg. Supplied from manufacturer DWK Life Sciences, these octagonal semi-hollow stoppers complement DURAN® glassware lines and other DIN-compatible assemblies, helping keep multi-piece setups sealed during storage, mixing or short-term holding of samples and reagents. Choose this 29/32 format when matching larger standard taper necks on common laboratory glassware.
This article is part of Ground-joint glass stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 10 pc(s)
- Product type: Brown glass stoppers, DURAN®
- Joint size: 29/32
- Design: Semi-hollow, octagonal
- Standard: DIN 12252
- Weight: 0,690 kg
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Questions about Brown glass stoppers, DURAN®, semi-hollow, 29/32, DIN 12252, octagonal
What is this article?
Brown glass stoppers, DURAN®, semi-hollow, 29/32, DIN 12252, octagonal is the article on this page. Luminix Health distributes DWK Life Sciences 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?
The technical information on this page is the manufacturer's sheet. Read that, not a rewritten specification.
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.