Description
SVS Screw Coupling GL18 is a laboratory hose coupling intended for secure threaded connections on GL18 glass threads. Fitted with a silicone-PTFE seal, it provides a dependable interface between flexible tubing and glass apparatus in chemical, analytical and routine laboratory fluid-handling applications. The GL18 thread format is common on mid-size bottles, reactors and laboratory vessels, making this coupling a practical choice where a robust yet compact joint is needed. Supplied as one piece, the component has a net weight of 0,011 kg and a gross weight of 0,011 kg, allowing straightforward integration without adding significant bulk. The silicone-PTFE gasket pairs silicone elasticity with PTFE chemical resistance to support consistent sealing performance under typical laboratory conditions. Manufactured by Witeg, the SVS screw coupling is classified among hose couplings and is suited to modular tubing systems built around standardised GL threads. Its design supports rapid assembly and disassembly while helping maintain joint integrity during everyday use in research and quality-control laboratories. Produced in Germany, it fits cleanly into glassware configurations used for controlled fluid transfer and sample work.
This article is part of Hose connectors, adapters & fittings, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Thread size: GL18
- Seal: Silicone-PTFE
- Country of origin: Germany
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Questions about SVS-screw thread adaptor coupling GL 18
What is this article?
SVS-screw thread adaptor coupling GL 18 is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Hose connectors, adapters & fittings, inside Tubing, hoses & fittings, in Labware.
A hose connector or adapter joins two lines, or steps one bore down to another. The barb diameter has to match the tube, and the thread has to match the stopcock or the bottle. Most leaks are a mismatch here, not a hole in the tube.
Tubing is how a liquid or a gas moves between two vessels without being poured. Silicone stays flexible and survives repeated autoclaving. PTFE resists almost every solvent and is stiff. PVC is the ordinary flexible line for water and for mild aqueous work. The fitting, not the tube, is what usually leaks: the barb, the thread and the stopcock have to match the tube bore. Glass and plastic apparatus around these lines is indexed under ISO laboratory ware.
Which category should I open next?
The category is Tubing, hoses & fittings. The sub-category is Hose connectors, adapters & fittings. The catalogue is Labware.
Shelves beside this one are PVC, PTFE & other tubing, Stopcocks & valves, Silicone tubing and Tubing 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.