Description
Screw cap, PP, natural, GL 18 is a laboratory screw closure manufactured from polypropylene for secure sealing of GL 18 threaded bottles and vessels. The natural-coloured polypropylene body provides a practical, chemically resistant fit for routine sample handling, reagent storage, and general laboratory workflows where a reliable GL thread interface is required. Supplied as a single piece, this cap from manufacturer lab-o-plastix is designed for straightforward mounting on matching GL 18 glass or plastic bottles used in analytical, preparative, and teaching laboratories. The polypropylene construction supports repeated use under typical lab conditions and is autoclavable up to a maximum of 121 °C; before autoclaving, unscrew the closure and place it on the bottle rather than leaving it tightly fastened. Natural colouring keeps contents visible at the neck area and suits applications where colour coding is not needed. Ideal as a replacement or spare closure for GL 18 systems, it integrates cleanly into existing bottle inventories for media, buffers, solvents, and aqueous solutions handled under standard laboratory practice.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Product type: Screw cap
- Material: Polypropylene (PP)
- Colour: Natural
- Thread: GL 18
- Autoclavable: up to max. 121 °C
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Questions about Screw cap, PP, natural, GL 18
What is this article?
Screw cap, PP, natural, GL 18 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. 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.