The FT-10, FT-12, FT-16, FT-20, FT-25, and FT-30 mechanical seals are replacement parts designed for automotive water pump applications.These seals are constructed from CAR (carbon), CER (ceramic), and NBR (nitrile rubber) materials.They are rated for operating speeds up to 15 m/s, temperatures from –30 °C to 150 °C, and pressures up to 0.6 MPa.The seals conform to standard dimensions and are available in shaft diameters of 10 mm, 12 mm, 16 mm, 20 mm, 25 mm, and 30 mm.Each seal is intended for direct replacement in compatible automotive water pump assemblies. This is not an part.All brand mentions are used strictly for compatibility reference.