... medium: water ,sea water, sewage , oil, air, weak acid and soda etc. Applicable temperature of ... test 1.52.4 Seal test 1.11.76 Air Seal Test 0.60.6suitable medium Air, water, sewage, steam ... mill cast iron, stainless steel and special materials seal ring all kinds of rubber Characteristics of Product ... operation. 3.Disc has two-way bearing, perfect seal, without leakage under the pressure test. 4. ...