Description
Screw caps with borehole in red PBT are threaded laboratory closures designed for GL 45 bottle necks and related vessel systems. Each cap incorporates a central borehole with a diameter of 34 mm, allowing tubing, probes, or connectors to pass through while the threaded body secures the seal on compatible glass or plastic containers. Manufactured from polybutylene terephthalate (PBT), the red caps are specified for a working temperature range from −45 to +180 °C, supporting both chilled and elevated-temperature laboratory workflows. These closures belong to the seals and hose-connector accessory family used with laboratory bottles, tins, and canisters. Supplied from manufacturer DWK Life Sciences, the caps arrive as a practical pack of 10 pieces with a total pack weight of 0,250 kg, suited to routine restocking of analytical, preparative, or process benches. The open borehole geometry supports gas-washing setups, sampling lines, and custom manifold arrangements where a fixed passage through the closure is required. Clear colour coding in red aids quick visual identification among mixed labware inventories. Use only with matching GL 45 threads and appropriate sealing elements for the intended medium and temperature.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 10 pc(s)
- Material: PBT
- Colour: Red
- Thread: GL 45
- Borehole diameter: 34 mm
- Temperature range: −45 to +180 °C
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Questions about Screw caps with borehole, PBT, red, GL 45, Ø borhole 34 mm, -45 to +180 °C
What is this article?
Screw caps with borehole, PBT, red, GL 45, Ø borhole 34 mm, -45 to +180 °C 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?
The technical information on this page is the manufacturer's sheet. Read that, not a rewritten specification.
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.