... Forms:packing gland, expeller seal, mechanical seal. Driving type: V-belt drive, hydraulic coupling drive,fluid couling drive, frequency conversion drive ... , thyrister speed regulation ectThey are suitable for delivering slurries in mining, explosive sludge in metal melting, grudging in dredger and course ... to 3 weeks after depositPackingWooden case 12/10G-G river mining dredge pump machine