Description
Lid DN 300 with central socket NS 24/29, three GL 25 threads and one GL 32 thread is a reaction vessel lid crafted from borosilicate glass 3.3 for laboratory applications involving flat ground joints. This component provides a secure multi-port cover for DN 300 vessels, enabling the attachment of condensers, sensors, feed lines and other accessories essential in chemical synthesis and process research. The central NS 24/29 ground joint socket ensures compatibility with standard laboratory glassware, while the GL threaded ports offer flexible sealing options with screw caps or adapters. Measuring 300 mm in diameter and weighing 2,890 kg net, the lid delivers mechanical stability and a reliable seal under typical reaction conditions. Produced by manufacturer Rettberg, it combines the proven thermal and chemical resistance of borosilicate glass 3.3 with a practical port layout suited to multi-functional setups. Researchers and technicians value this design for organic reactions, distillations and controlled atmosphere work where clear visibility and inert surfaces are advantageous. The single-piece construction simplifies handling and cleaning between experiments.
This article is part of Lids & seals, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Diameter: 300 mm
- Material: Borosilicate glass 3.3
- Socket: NS 24/29 (centre)
- Threads: 3× GL 25, 1× GL 32
- Technical Information Sheet:
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Questions about Lid, DN 300, socket size 24/29, 3x thread GL 25, 1x thread GL 32
What is this article?
Lid, DN 300, socket size 24/29, 3x thread GL 25, 1x thread GL 32 is the article on this page. Luminix Health distributes Rettberg for laboratory use. It sits in Lids & seals, inside Stoppers, caps & closures, in Labware.
Lids and seals are the covers of dishes, jars and tanks: a snap lid, a sealing film, a gasket. The seal is doing the work. A lid that only rests on the rim does not contain a volatile liquid.
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 Lids & seals. The catalogue is Labware.
Shelves beside this one are Screw caps & closures, Rubber & silicone stoppers, Ground-joint glass stoppers 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.
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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.