NF E29-901-1*NF EN 12560-1:2001 Flanges and their joints - Gaskets for Class-designated flanges - Part 1 : non-metallic flat gaskets with or without inserts
2001NF E29-901-1*NF EN 12560-1:2001 Flanges and their joints - Gaskets for Class-designated flanges - Part 1 : non-metallic flat gaskets with or without inserts