HENGDA MECHANICAL SEAL MANUFACTURER Co., Ltd is one of China bigeest manufacturer that making pump mechanical seals, auto pump seals, water pump seals, cartridge seals, metal bellow seals and ceramic seal faces and rings, sintered sic(ssic) seal faces and rings, sic(silicon carbide) seal faces and rings, tungsten carbide(TC) seal faces and carbon or graphite seal faces and rings supass ten years. We have two brand of mechanical seals, one brand is "HM", It supass ten years, one brand is "hengda", please recognize our trademark. They can mostly take place those products of famous brand, but with very good price. Our major mechanical seals for pump is as below: