The document specifies the dimensions and marking of non-metallic flat gaskets, with or without inserts, for use with flanges complying with DIN EN 1092-1,2,3, and 4, and pipes and fittings complying with DIN EN 545, DIN EN 598 und DIN EN 969 up to and including PN 63 and up to and including DN 4000
EN 1514-1:1997 history
1997EN 1514-1:1997 Flanges and their joints - Dimensions of gaskets for PN-designated flanges - Part 1: Non-metallic flat gaskets with or without inserts