... Resistancezirconia ceramic product zirconia shaft sleeve,ceramic shaft sleeve Features:1. Material: Alumina Ceramic, Zirconia Ceramic, ZTA, SIC etc ... in petroleum, medicine, chemical, mobile manufacture, ApplicationsStructure Ceramics Ball Valves can be taken the strong impact of hi- ... or saline solutions, gaseous media, etc.. Hard sealing ball valves also used in media with particles and fibers. ...