... seat 3.mechnaical seal part 4.Dia 20~125mm Silicon Carbide Stationary Seat Design 1.Sic mechanical seal2. Sealing ring-O ... /V ring Material 1.Mating rings: sic , tungsten carbide, carbon graphite,etc2. O-ring: Fluorine rubber/EPDMThe mechanical seal ... pumps, blowers, agitators, compressors, and other rotary shaft equipment. Silicon Carbide Stationary Seat