Description
Closed screw caps GL 32 are laboratory bottle closures designed for secure sealing of glassware and vessels fitted with a GL 32 thread. These red caps incorporate a PTFE-coated gasket that supports a reliable, chemically resistant seal for storage, transport and everyday handling of samples, media and reagents. The fully closed construction without any aperture is suited to applications that require an uninterrupted barrier, such as reagent storage, solvent containment and standard laboratory bottle systems. Available in a pack of 10 pieces from manufacturer Witeg, each unit has a net weight of 0,02 kg and is intended for common GL 32 neck finishes found on laboratory bottles. The PTFE-coated seal helps maintain closure integrity across aqueous and many organic media while the robust closed cap format remains practical for routine bench work. These screw caps are appropriate for analytical chemistry, life-science workflows, quality-control laboratories and research settings where consistent sealing performance and clear bottle compatibility are essential. Their red colour further aids rapid visual sorting among mixed laboratory glassware.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 10 pc(s)
- Thread: GL 32
- Seal: PTFE-coated gasket
- Colour: red
- Design: Closed
- Technical Information Sheet:
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Questions about Screw caps, top closed GL 32
What is this article?
Screw caps, top closed GL 32 is the article on this page. Luminix Health distributes Witeg 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.