Working Conditions of pump mechanical seals DY47: handling fluids:Water, oil, acid, alkali, ,etc. temperature:-30oC~200oC, pressure: ≤1.2Mpa, speed: ≤ 18m/Sec. carbon,silicon cabide/sic,tungsten carbide/tc/sintered silicon carbide/ssic can work as mechanical seal faces/rings and NBR,FKM and epdm is operating as secondary sealing elements and SUS 304 and 316 can be made into wave springs and other metal parts.