Double Rubber Expansion Joint:Main MaterialNo.NameMaterial1Outer/inner rubberNR,EPDM,NBR2Key frameNylon cord fabric3Pressurized ringSteel Wire Strand4FlangeQ235 Technical ConditionsTypeIIIIIIWork pressure MPa(Kgf/cm2)1(10)1.6(16)2.5(25)Explosion Pressure MPa(Kgf/cm2)3.0(30)4.8(48)5.5(55)Vacuum KPa(mmHg)53.3(400)86.7(650)100(750)Applicable Temprature oC-15 115 special to -30 250Applicable Mediawater,sea water,hot water,oil,acid,alkali etc