Description
Screw cap with bore, PBT, GL 18, red is a laboratory closure designed for secure sealing of bottles and flasks while allowing controlled access through a central opening. Manufactured from polybutylene terephthalate (PBT), this red screw cap combines mechanical strength with useful chemical resistance for everyday laboratory handling. The GL 18 thread ensures a reliable fit on matching glass or plastic necks commonly used in chemistry, biology and analytical workflows. A short-term thermal load capacity up to 200 °C supports brief exposure to elevated temperatures during sample preparation or process steps. The integrated bore permits passage of tubing, probes or sampling lines without fully removing the cap, helping maintain containment and reduce contamination risk. Colour coding in red aids rapid visual identification on crowded benches. Offered as a single piece from manufacturer lab-o-plastix, the cap suits research, quality-control and teaching laboratories that require durable, reusable screw closures with access capability. It integrates cleanly into standard GL 18 glassware systems for media handling, reaction setups and storage applications.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Product type: Screw cap with bore
- Material: Polybutylene terephthalate (PBT)
- Thread: GL 18
- Colour: Red
- Thermal resistance: short-term up to 200 °C
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Questions about Screw cap with aperture, made of PBT, GL 18, red
What is this article?
Screw cap with aperture, made of PBT, GL 18, red is the article on this page. Luminix Health distributes lab-o-plastix 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.