Long operation life Material:304,316L,316,Hastelloy C,Hastelloy B,17-7PH , 20#alloy Standard or nonstandard: nonstandard Applicable working condition 1,The pressure of sealed chamber: ≤1.2MPA 2,The temperature of sealed chamber: -40-220°C 3,Medium: water, oil, weak acid ,weak base and other general corrosive liquid Description1, It's rotating speed is low to 30000RPM2,The small spring with ...