Description
Screw caps made of urea resin moulding compound in black, fitted with a Lupolen® insert and intended for GL 18 threads, provide dependable sealing solutions for laboratory bottles and jars. The urea resin body offers dimensional stability and mechanical strength suitable for repeated opening and closing in everyday laboratory use. An integrated Lupolen® insert enhances the seal against the bottle rim, helping to reduce evaporation and contamination risks during storage or transport of reagents and samples. These black screw caps from manufacturer Hecht are offered in different packing units to match varying consumption patterns. Designed specifically for GL 18 neck finishes, they integrate readily with compatible wide-mouth or narrow-mouth glassware. The combination of a rigid moulded shell and resilient insert supports reliable closure performance across chemical, pharmaceutical and general laboratory workflows. Compact and straightforward to handle, the caps form a practical accessory for maintaining secure containment of laboratory contents under routine working conditions.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Product type: Screw cap
- Material: Urea resin moulding compound
- Colour: Black
- Insert material: Lupolen®
- Thread size: GL 18
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Questions about Screw caps of urea resin molding compound, black, sealing of Lupolen® GL 18
What is this article?
Screw caps of urea resin molding compound, black, sealing of Lupolen® GL 18 is the article on this page. Luminix Health distributes Hecht 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 the EU, two to five days if 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.
