... absorber,soft joint etc Consist of inner rubber,Jinlun reinforced rubber and loose metal flange,ith high pressure chracter ... acid concentration, solid-state materials. Material: NO.NAMEMaterial1Inner and outer rubberNR,EPDM,NBR,SI2Key frameNylon Core fabric3Pressurized ringSteel Wire ... ,oil,acid,alkali etc.Main Data: DNLengthL(mm)Outer Diameter of flange D (mm)Bolts numbernbolt hold diameterd0 ...