Description
Screw caps made of PBT in red are laboratory closures with a GL 18 thread, measuring Ø 23 × H 20 mm for bottles and vessels that share this common neck size. The PBT material forms a sturdy, reusable cap suited to frequent handling in sample preparation, storage and general laboratory practice. Red colouring makes sealed containers easy to spot and helps differentiate vessel groups at a glance. The pack contains 10 pieces and weighs 0,060 kg, providing a practical quantity for bench stock or kit assembly. These screw caps from manufacturer DWK Life Sciences fit laboratory glassware, containers and consumable systems that rely on screw seals and related accessories. GL 18 threading matches standard laboratory bottles and flasks used for reagents, buffers and intermediate samples. The Ø 23 × H 20 mm envelope keeps the closure compact while ensuring adequate engagement on the corresponding glass or plastic neck. Laboratories that standardise on red PBT GL 18 caps benefit from uniform appearance, straightforward replacement and reliable mechanical sealing across routine liquid-handling and storage applications without changing established bottle systems.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 10 pc(s)
- Product type: Screw caps
- Material: PBT
- Colour: Red
- Thread: GL 18
- Dimensions: Ø 23 × H 20 mm
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Questions about Screw caps made of PBT, red, GL 18, Ø 23 x H 20 mm, 10 unit(s)
What is this article?
Screw caps made of PBT, red, GL 18, Ø 23 x H 20 mm, 10 unit(s) 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.