... is made of internal rubber ,middle rubber ,2,4 or 6 layers of wire-wood,and external rubber .b) it is ... , emulsifying oil, air and water, although the temperature is -40+100. d)this products are widely used in various hydraulic equipment ... Diametermm Working PressureBurst PressureMin.Bend RadiusmmWeight Kg/mPly*Innerdiameter*PressureMPAPsiMPaPsi4sp-6-100 14.4±0.8 10014490210304921300.654sp-8-80 16.4 ...