Description
Screw coupling, PBT, flexible, rotatable is a laboratory screw coupling for GL 18 connections used in liquid chromatography and related HPLC setups. The body is made of polybutylene terephthalate (PBT) and pairs a flexible, rotatable design with a silicone seal, supporting secure attachment of tubing or hose to vessels and system necks that use the GL 18 thread format. Rotatability helps limit twist in connected lines during assembly and routine handling, while the flexible construction aids convenient orientation of fluid paths on bottles, flasks, and chromatography reservoirs. The article is supplied as 1 pc and has a weight of 0,010 kg, making it a compact connector element for bench and instrument work. Offered from manufacturer DWK Life Sciences, it sits naturally among HPLC and LC accessories where a PBT screw coupling with silicone sealing is required at GL 18. Typical contexts include liquid chromatography (LC, HPLC, LC-MS) fluid handling and general laboratory configurations that need a rotatable screw interface rather than a fixed joint. The coupling provides a defined mechanical link between GL 18 necks and connected tubing without altering the underlying thread standard.
This article is part of HPLC fittings, tubing & inline filters, in HPLC columns & accessories.
Key features
- Pack size: 1 pc
- Material: PBT
- Thread size: GL 18
- Seal material: Silicone
- Design: Flexible, rotatable
- Temperature range: -45 to +180 °C
Recently viewed
You may also like
Browse related categories
Category
Sub-category
HPLC fittings, tubing & inline filters
Catalogue
Brand
Questions about Screw coupling, PBT, flexible, rotatable, GL 18, silicone seal, -45 to +180 °C
What is this article?
Screw coupling, PBT, flexible, rotatable, GL 18, silicone seal, -45 to +180 °C is the article on this page. Luminix Health distributes DWK Life Sciences for laboratory use. It sits in HPLC fittings, tubing & inline filters, inside HPLC columns & accessories, in Chromatography equipment.
HPLC fittings and tubing are numbered by bore. A wide bore after the column broadens the peaks. Finger-tight and wrench fittings, and stainless against PEEK, are different pressure ratings. An inline filter is the last screen before the column, and it clogs on purpose so the column does not.
An HPLC column is a tube packed, or coated, with a stationary phase. The sample is carried through it by a liquid, and the compounds leave at different times. The phase, the particle size, the length and the internal diameter decide the separation. A guard column is a short sacrificial piece in front of the analytical column. Fittings and tubing have a bore that either preserves the peak or smears it. Compound names follow IUPAC. Data are on PubChem. Method grades often cite the European Pharmacopoeia or USP.
Which category should I open next?
The category is HPLC columns & accessories. The sub-category is HPLC fittings, tubing & inline filters. The catalogue is Chromatography equipment.
Shelves beside this one are HPLC columns, HPLC guard columns and HPLC 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.