Ma Tso mechanical seal, also known as seal, than the packing has many advantages, such as saving power, reliable sealing, etc., so the center can use mechanical seals should be used. However, the use of some mechanical seal life is not long, working together is much more cumbersome than packing. In such situation, it not only shows no advantages, has become a defect. Therefore, the implementation of extended application of the mechanical seal life is one of the key results. The use of mechanical seal life of many factors, one important one is the stationary ring material. In the unusual conditions, the static rings of different materials, the use of life is not the same. Currently, the common mechanical seals are used to dip resin graphite stationary ring, if it dipped into the metal graphite, the use of life expectancy much longer.