Dyseals is specialized in making mechanical seal rings with high quality and competitive price a state hightech enterprise in China for 30 years,operating ERP system characterized with mechanical seal industry and tele-work.Mechanical seal faces/rings in silicon carbide,ceramic, tungsten carbide, carbon,silicon carbide and ceramic shafts and sleeves/bushes/bushings, bronze sleeves, boron carbide and sic bullet-proof plates etc..Pump manufacturers and repairs and mechanical seal companies are welcome to establish business relationships. Dyseals is the right one you are looking for.