Description
Flat ground lid DN 200 is a plan flange lid for laboratory glassware assemblies that require a large nominal diameter connection. The lid presents a flange outer diameter of 242 mm and is configured with a centre neck NS 45/40, one straight side neck NS 29/32 and three angled side necks NS 29/32, giving flexible multi-port access for stirring, dosing, sensors or condensers on DN 200 vessels. This arrangement supports standard ground-joint accessories commonly used in synthesis, distillation and process development setups. Supplied as a single piece, the lid integrates cleanly into existing plan-flange reactor or flask systems where a robust multi-neck cover is required. Manufactured by Witeg, it suits preparative and pilot-scale glass apparatus in research and industrial laboratories that rely on DN 200 plan flange geometry and NS joint compatibility for modular build-up of reaction trains.
This article is part of Lids & seals, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Type: flat ground / plan flange lid
- Nominal diameter: DN 200
- Flange outer Ø: 242 mm
- Centre neck: NS 45/40
- Side neck straight: NS 29/32
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Questions about Lid flat flange DN 200
What is this article?
Lid flat flange DN 200 is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Lids & seals, inside Stoppers, caps & closures, in Matériel de laboratoire.
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 Matériel de laboratoire.
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.
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.