OY-210 Mechanical Seal Equivalent to John Crane Type 2100 1. Operating Conditions Pressure: Up to 20bar or 290psi Speed: Up to 13m/s or 42ft/s Temperature: -40 to 180 centigrade degree(depending on materials used) 2. Material Seal face/Primary ring: Carbon graphite, Silicon carbide, Tungsten carbide. Seat/Mating ring: Alumina ceramic, Silicon carbide, Tungsten carbide. Secondary seals: NBR, Viton, EPDM, silicone Spring and others：SUS304，SUS316, SUS316L etc. 3. Shaft Size From 20mm to 60mm