American standard flange sealing surface
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In the ANSI B16.5 flange standard, for the seal surface type RFS, what does the letter S stand for? Where can I find this information?
In the ANSI B16.5 flange standard, the seal face type RFS – the ‘S’ in it stands for ‘Serrated’, which means it has serrated edges. The serrated sealing surface improves the sealing effect and prevents the flange from shifting or leaking under high pressure. You can find this explanation in the ANSI B16.5 standard text. If you need to find the standard text, you can search for the ANSI B16.5 standard on the Internet and download it from relevant websites. .