Description
Replacement screw lock GL 12 is a spare securing part for laboratory stopcocks covering NS 18,8 and NS 21,5 ground joints with a GL 12 thread. Manufactured from PE-HD, the lock is supplied with a washer and a rubber O-ring so that the sealing interface can be restored without changing the entire stopcock assembly. The article is packed as one piece and has a net weight of 0,003 kg, making it a practical stock item for glassware maintenance. In the laboratory this screw lock is used to secure stopcock plugs and related fittings on larger joint sizes where a reliable mechanical hold is required during routine chemical work. The combination of PE-HD body, washer and rubber O-ring matches the geometry of GL 12 threaded connections on the stated NS ranges. This replacement screw lock from manufacturer Witeg supports service and repair of stopcock systems classified under Hahnsicherungen, allowing worn fasteners to be exchanged quickly. Clear identification by GL 12 thread and the dual NS 18,8 / 21,5 compatibility helps ensure the correct spare is selected for the corresponding glassware.
This article is part of Grease, boiling stones & sealants, in Tools & accessories.
Key features
- Pack size: 1 pc
- Product type: Replacement screw lock
- Thread size: GL 12
- Ground joint: NS 18,8 + 21,5
- Material: PE-HD
- Includes: Washer and rubber O-ring
Récemment consulté
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Questions about Seperate screw-thread retaining nut GL12
What is this article?
Seperate screw-thread retaining nut GL12 is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Grease, boiling stones & sealants, inside Tools & accessories, in Matériel de laboratoire.
Grease seals a ground joint. Boiling stones give a liquid a place to start boiling so it does not bump. A sealant does the same job as grease when grease would contaminate the product. They are small, and they decide whether a joint weeps.
The small tools of the bench are what the hand actually holds: a spatula for a powder, forceps for an object that must stay clean, a brush for a narrow neck, a desiccator when a dried sample must not take up water again. None of these reads a measurement. They keep the measurement possible. The apparatus around them is listed under ISO laboratory apparatus.
Which category should I open next?
The category is Tools & accessories. The sub-category is Grease, boiling stones & sealants. The catalogue is Matériel de laboratoire.
Shelves beside this one are Spatulas & spoons, Other lab tools & accessories, Lab furniture, trolleys & storage, Tweezers & forceps, Scissors, scalpels & dissecting instruments, Weighing boats, dishes & paper, Desiccators & desiccant, Timers, stopwatches & calculators, Stationery, books & lab notebooks, Brushes & cleaning tools, Stirring rods, spreaders & glass tools, Cutting & sealing tools and Gas handling & burners accessories.
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.