This EX series gasket is designed and manufactured for muti-pass heat exchangers. Pass ribs are welded to inner hoop of gasket or onner ring. 2 type of pass rids are available. Tube type or Metal jacket type. EX series gasket are available for asbestos, non-asbestos, PTFE, graphite. For tongue and groove flange, stainless steel rod ( SUS304,316 3.2mm ) fixed in circumferential groove of the inner hoop is also available on request. Max Pressure : 25Mpa Max Temperature : 550°C