...Mohammed Diany; Abdel-Hakim Bouzid The tightness of valves, compressors and pumps is ensured by superposed braided rings installed in a stuffing-box system. The nature of the packing material and structure, which is like a rectangular braided cord, influences the proper stuffing-box assembly...

...Mohammed Diany; Abdel-Hakim Bouzid The long term tightness performance of stuffing-box packings, used in valves, is conditioned by the capacity of its sealing material to maintain a contact pressure to a predetermined minimal threshold value. Due to the creep, this contact pressure decreases...