Mechanical Seals, Pump Seals, Sic Ring manufacturer / supplier in China, offering John Crane 5620PR Cartridge Mechanical Seal for Pump ONYX BB PUMP MODEL MB 400/600 M/J5501 E08-01-0528, 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, cartridge seal shaft size 68mm and so on.