... Packing: Graphite 25Cr1MOV 6) Stem material: 410(1Cr13), 420(2Cr13), 304, 316, 304L, 316L, 38CrMoAlA, 5) Body and disc material: WCB ... Packing: Graphite 25Cr1MOV 6) Stem material: 410(1Cr13), 420(2Cr13), 304, 316, 304L, 316L, 38CrMoAlA, 5) Body and disc material: WCB ... Packing: Graphite 25Cr1MOV .6) Stem material: 410(1Cr13), 420(2Cr13), 304, 316, 304L, 316L, 38CrMoAlA, 5) Body and disc material: WCB ...