This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Waveguidechokeflangecrosssection.svg handSVG ValidSVG en Eplane crosssection of connected choke and gasket waveguide flanges These are the flanges in the photo File WaveguidechokeflangeUGU In the crosssection the gap between the flange faces has been exaggerated by factor of to make it clearly visible Legend waveguide tubing socketmounted