The Tsurumi HS3.75S-62 is a semi-vortex submersible trash pump with agitator. The built-in shaft mounted agitator suspends solids. The Urethane Semi Vortex Impeller is for maximum durability and pump performance. It features a Double Inside Mechanical Seal with SiC faces that provides longest operational life. The Oil Lifter provides lubrication of the seal faces. (Patent Pending) The V-Ring Seal Protector protects mechanical seal from abrasive particles.