Description
Flex-tube, PFA is a flexible laboratory hose for general liquid-handling applications, specified with a connection inner diameter of 18 mm and an outer diameter of 20 mm. Made from PFA, it provides a chemically resistant, flexible conduit for transferring aqueous media and many laboratory chemicals where inert tubing is advantageous. The product is offered in a 1 m pack length and has a unit weight of 1,700 kg, making it a practical choice for fixed or temporary installations on laboratory benches and apparatus. The 18/20 mm connection dimensions align with standard fittings in this class and support secure attachment with suitable clamps and connectors. This flex-tube from manufacturer ROTH SELECTION forms part of the hoses-and-accessories assortment for general laboratory work and is appropriate for media transfer, flexible routing, and everyday fluid connections that demand durable PFA performance. A smooth bore assists consistent flow and facilitates cleaning between successive uses in research or process environments.
This article is part of PVC, PTFE & other tubing, in Tubing, hoses & fittings.
Key features
- Pack size: 1 m
- Material: PFA
- Inner diameter: 18 mm
- Outer diameter: 20 mm
- Weight: 1,700 kg
- Product type: Flex-tube for liquid handling
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Questions about Flex-tube, PFA, connection inner-Ø 18 mm, outer-Ø 20 mm, 1 m
What is this article?
Flex-tube, PFA, connection inner-Ø 18 mm, outer-Ø 20 mm, 1 m is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in PVC, PTFE & other tubing, inside Tubing, hoses & fittings, in Labware.
PVC is the flexible everyday tube for water and mild aqueous liquids. PTFE is the stiff, almost inert tube for solvents. Other polymers sit between them. The bore, the wall and the chemical resistance are the specification, and the tube is cut to length.
Tubing is how a liquid or a gas moves between two vessels without being poured. Silicone stays flexible and survives repeated autoclaving. PTFE resists almost every solvent and is stiff. PVC is the ordinary flexible line for water and for mild aqueous work. The fitting, not the tube, is what usually leaks: the barb, the thread and the stopcock have to match the tube bore. Glass and plastic apparatus around these lines is indexed under ISO laboratory ware.
Which category should I open next?
The category is Tubing, hoses & fittings. The sub-category is PVC, PTFE & other tubing. The catalogue is Labware.
Shelves beside this one are Hose connectors, adapters & fittings, Stopcocks & valves, Silicone tubing and Tubing accessories.
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.

