Features HARD AND CORROSION RESISTANT TUNGSTEN TI: The mechanical seal adopt a new type of hard and corrosion resistant tungsten Ti material, which can make the pump realize safe and continuous operation SIGNIFICANT ENERGY SAVING: The overall structure is compact, small in size, low in noise, significant in energy saving, and convenient for maintenance, very practical AUTOMATIC PROTECTION: Automatically protect the pump from water leakage, electric leakage, overload and over temperature, which improves the safety and reliability of the product EASY TO REPLACE AND INSTALL: The product works for keep seal balanced, easy to replace and install, very convenient to operate STABLE STRUCTURE: Come with a spring, which possess stable structure, excellent performance and long service life Specification: Item Type: Mechanical Shaft Seal Model: 103-17 Material: Graphite to ceramic EPDM 304 + tungsten Ti Package List:1 x Seal Ring1 x Spring Package List 1 x Seal Ring 1 x Spring