... mixers, cartridge mechanical seal, cartridge sea 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 shaft ... MPa , cavity temperature ≤ 80, Velocity≤3m/s. 285, 286, 288 series mechanical seal for bottom entry mixers