Mechanical Seals Replacement Silicon Carbide Circulating Water Pump Seal Spring Kit 5205/8 1EXCELLENT MATERIALS: The mechanical seal is made of ti tungsten material, which has high hardness and corrosion resistance. 2SEAL RING AND SPRING: The sealing ring is used in conjunction with the spring to make the water pump safe and continuous operation. 3COMPACT STRUCTURE: The overall structure is compact, small in size and low in noise, with good energy saving effect. 4GOOD PROTECTION: Automatic protection for pump water and electricity leakage, overload and over temperature, with good reliability. 5REPLACEMENT PARTS: The mechanical seal of the pipeline circulating water pump can directly replace the old or broken parts.