... 17-7PH , 20#alloy Standard or nonstandard: nonstandard spring mechanical seal Applicable working condition 1,The pressure of sealed chamber: ... temperature of sealed chamber: -40-220°C 3,Medium: water, oil, weak acid ,weak base and other general ... EquipmentOur advantages1,Imported material is widely used in manufacturing mechanical seals2,Direct factory price3,Professional technical services4,Products ...