Pump Mechanical Seal, John Crane Mechanical Seal, Water Pump Mechanical Seal manufacturer / supplier in China, offering Flygt Cartridge Mechanical Seal for Sewage Xylem 3171 3153 3301 Pump 20/25/35/45/60/90mm, 85-160HP Flygt N 3315 Equivalent Submersible Pump, 60-105HP Non-Clog Heavy-Duty Submersible Sewage Pump and so on.