Rubber hydraulic hoses are used in high pressure hydraulic systems for control and power supply. They are designed to transfer hydraulic oil primarily (hydraulic fluid compliant with ISO 6743-4, apart from HFD R, HFD S and HFD T fire-resistant fluids).A hydraulic hose is specifically designed for hydraulic systems. They convey high-pressure oils or water between the fluid ports of the pumps and actuators, where the oils or water are used to create mechanical movement.