DIN EN 1514-3:1997-08 Flanges and their joints - Dimensions of gaskets for PN-designated flanges - Part 3: Non-metallic PTFE envelope gaskets; German version EN 1514-3:1997
1997DIN EN 1514-3:1997-08 Flanges and their joints - Dimensions of gaskets for PN-designated flanges - Part 3: Non-metallic PTFE envelope gaskets; German version EN 1514-3:1997
1997DIN EN 1514-3:1997 Flanges and their joints - Dimensions of gaskets for PN-designated flanges - Part 3: Non-metallic PTFE envelope gaskets; German version EN 1514-3:1997