Description
Insert for screw cap GL 14 6,0 mm is a DURAN® laboratory insert for GL 14 screw closures, offering an inner diameter of 6,0 mm (approximately 1/4 inch). It provides a larger defined opening for tubing, probes or transfer lines while mating with the GL 14 thread on bottles and laboratory glassware. Supplied as a single piece with a net weight of 0,005 kg and a gross weight of 0,006 kg, the insert is a compact accessory for configuring closed vessels. Produced by Duran/DWK Life Sciences, it is specified as non-sterile and is intended for research, quality-control and analytical applications that use modular screw-cap systems. Together with a corresponding GL 14 screw cap it allows controlled access through the bottle neck without disturbing the threaded seal. Common applications include routing ~1/4-inch tubing into media or process bottles, adapting reaction vessels for sampling or gas lines, and building flexible fluid paths in chemistry and life-science laboratories that standardise on DURAN® GL 14 closures and related accessories.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
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Questions about Insert for screw cap GL 14 6,0 mm
What is this article?
Insert for screw cap GL 14 6,0 mm is the article on this page. Luminix Health distributes DWK Life Sciences for laboratory use. It sits in Screw caps & closures, inside Stoppers, caps & closures, in Labware.
A screw cap has a thread and a liner. The thread has to match the bottle. The liner has to survive the liquid: a pulp liner fails in a solvent that a PTFE-faced liner ignores. The colour of the cap is not the specification.
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 Screw caps & closures. The catalogue is Labware.
Shelves beside this one are Rubber & silicone stoppers, Ground-joint glass stoppers, Lids & seals 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. Delivery across Europe, two to five days when in stock. 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.

