... Advanced technology, Assurable quality, Authentic reputation bottom entry mixers, cartridge mechanical seal, cartridge ... 285, 286, 288 series mechanical seal for bottom entry mixers (cartridge mechanical seal, cartridge seal) ... These seals are special mechanical seal for bottom-entering tank. Type 285, 286 seals include ... 288 has the whole short shaft structure, working pressure is 1.33×10-54.0 MPa , ...