... , HNBR,FKM,Silicone, PU etc 2.Color: red, blue,green, transparent and so on. 1.Material: NBR, HNBR,FKM,Silicone, PU ... etc2.Color: red, blue,green, transparent and so on.3.Specification: according to customer's needs. Standard ... based hydraulic fluids, barely flammable hydraulic fluids, water,air and others. Application Mobile hydraulicsStandard cylindersIndustrial hydraulic