Description
DURAN® overcap, 45 mm, black phenolic resin is a protective laboratory accessory that screws over the open-top aluminium screw closure GL 45 to cover the septum or stopper. It shields these sealing elements from mechanical damage and contamination during storage or transport, helping preserve sample integrity. Phenolic resin caps offer a broad range of chemical compatibility and temperature tolerance, supporting use across varied laboratory conditions. Supplied as a single piece with a net weight of 0,013 kg and a gross weight of 0,014 kg, this optional 45 mm protective overcap provides practical extra coverage for open-top closures. The component from manufacturer Duran/DWK Life Sciences integrates with standard GL 45 bottle systems common in analytical and research settings. Typical applications include sampling, shipping and packaging workflows where the septum or stopper must remain protected. The black phenolic construction delivers a robust barrier without altering the primary closure function, making it a useful accessory for secure handling of reagents and samples from bench work through logistics.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Material: Black phenolic resin
- Diameter: 45 mm
- Compatibility: Open-top aluminium screw closure GL 45
- Function: Protects septum or stopper
- EAN: 4032051354135
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Questions about DURAN® Over-cap, 45 mm, black Phenolic
What is this article?
DURAN® Over-cap, 45 mm, black Phenolic 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. 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.