Mechanical Seals, Pump Seals, Sic Ring manufacturer / supplier in China, offering Special Custom Cartridge Mechanical Seal SIC/SIC/VIT/304 for Reactor, cartridge seal shaft size 68mm, John Crane 5620PR Cartridge Mechanical Seal for MERPRO ONYX PUMPS USA MB 600-D-3 STG./4 X 6 X 9 MB 400-D-3 STG./3 X 4 X 8 and so on.