... time and best service 4.Export 19 years Rotary Mechanical Seal Kit 58B Design 1.Multiple springs2. Sealing ring ... tungsten carbide, carbon graphite,etc2. O-ring: Fluorine rubber/EPDMThe mechanical seal permits accommodation of many different fluids by using of ... liquidized hydrocarbon,acid,alkali,pulp water,etc. Characteristics 1. Mechanical seal performance is stable and reliable.2.The service life ...