Description
Thread adapter, Type 121 is a precision laboratory fitting that converts an S51 female thread to an S55 male thread for reliable connections in fluid-handling systems. Manufactured from polytetrafluoroethylene (PTFE), the adapter offers excellent chemical inertness, thermal stability and low surface energy, making it suitable for aggressive solvents and reagents commonly encountered in analytical and preparative work. Its robust construction supports leak-free adaptation between vessels, tubing or apparatus with differing thread standards, reducing the need for intermediate fittings. The single-piece unit integrates easily into chromatography setups, solvent delivery lines and general laboratory transfer applications where contamination must be avoided. Available from manufacturer SCAT, this Type 121 adapter provides a durable, chemically resistant solution for research, quality-control and industrial laboratories that require consistent performance under repeated use. The PTFE material ensures long service life while maintaining dimensional stability across a wide range of laboratory conditions.
This article is part of Hose connectors, adapters & fittings, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Product type: Thread adapter Type 121
- Material: Polytetrafluoroethylene (PTFE)
- Thread connection: S51 (female) to S55 (male)
- Country of origin: Germany
- Region of origin: Hessen
- Technical Information Sheet:
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Questions about Thread adapter, Type 121
What is this article?
Thread adapter, Type 121 is the article on this page. Luminix Health distributes SCAT for laboratory use. It sits in Hose connectors, adapters & fittings, inside Tubing, hoses & fittings, in Labware.
A hose connector or adapter joins two lines, or steps one bore down to another. The barb diameter has to match the tube, and the thread has to match the stopcock or the bottle. Most leaks are a mismatch here, not a hole in the tube.
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 Hose connectors, adapters & fittings. The catalogue is Labware.
Shelves beside this one are PVC, PTFE & other tubing, Stopcocks & valves, Silicone tubing and Tubing accessories.
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.