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Pre-Assembled 20 mm Steel Magnetic Crimp Cap with Alumina/Silicone Septa, Pkg. 100

To save time on preparation time and increase ease-of-use, we offer pre-assembled 20 mm magnetic steel crimp caps for Heaspace Vials. Package of 100 pre-assembled caps with Alumina/Silicone Septa.

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Choose the right septa for your analysis. Although a wide variety of septa is available, chemical compatibility and temperature are the most critical to the analysis. Temperature applies not only to the vial, but also to the temperature of the instrument’s needle used for pressurization and sample transfer, which is heated to prevent condensation. A needle temperature higher than the vial temperature setting can decompose the septum material. PTFE coated silicone and aluminum-coated silicone offer the highest temperature operating limits.

For detailed information and specifications, please see the Cap and Septa Compatibility chart in our Chromatography Consumables Catalog.


Color Silver
Inner Diameter 20 mm
Material Aluminum/Silicone
Product Group Cap/Septa
Style Crimp Top
Technology Type Headspace
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