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Pre-Assembled 20 mm Steel Magnetic Crimp Cap with 1.5 mm Thick Red PTFE/Butyl 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 Red PTFE/Butyl 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.


Cap and Carrier Style Crimp Top
Color Gray
Inner Diameter 20 mm
Material PTFE/Buytl
Product Group Cap/Septa
Style Crimp Top
Technology Type Headspace
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About 90% of all drinking water comes from surface and groundwater sources which are susceptible to pollution by the chemicals used in industry and agriculture. Laboratories today are challenged with maintaining compliance with evolving regulations, technologies, and methods. We empower this critical analysis with our GC/MS and Headspace technologies. Coupled with our support expertise, we are a trusted innovator at the forefront of drinking water testing. Have confidence in your water testing with PerkinElmer solutions.

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