Description
Closed screw cap GL 100 is a laboratory-grade closure engineered for secure sealing of bottles and vessels fitted with a GL 100 thread. The cap body is produced from polybutylene terephthalate (PBT) reinforced with glass fibre, delivering high mechanical rigidity together with good chemical resistance in routine laboratory use. A PTFE-coated gasket is integrated into the cap to create a dependable, chemically inert seal that minimises leakage and reduces the risk of contamination or solvent loss. The closed design provides a solid, continuous lid without ports or openings, making it suitable whenever a simple, fully sealed closure is preferred. Temperature resistance extends to 160 °C, and the component is autoclavable, allowing repeated steam sterilisation without loss of dimensional stability. Offered as a single unit with a net weight of 0,07 kg, this screw cap from manufacturer Witeg is a practical choice for media bottles, reagent storage, sample vessels and process containers in chemistry, biotechnology and quality-control laboratories. Its robust construction supports reliable long-term sealing performance under typical laboratory thermal and mechanical loads.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Thread size: GL 100
- Material: PBT with glass fibre
- Seal: PTFE-coated gasket
- Design: closed
- Temperature resistance: up to 160 °C
- Technical Information Sheet:
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Questions about Screw cap GL 100 top closed
What is this article?
Screw cap GL 100 top closed 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.