Cat hoses are designed to route liquids and gases through machine systems. These hoses are fabricated from superior materials to withstand application-specific pressures, vibration tolerances, and flow requirements for Cat heavy-duty equipment. Cat hydraulic hose and couplings are subjected to the most rigorous testing processes in the industry. Every Cat hose and coupling combination is tested as a system to ensure a perfect fit that yields maximum safety and dependability. The Cat XT ES hose line-up is designed and manufactured by Caterpillar for high-pressure hydraulic applications. These range from 2500 to 6000 psi (17.5 to 42.0 MPa). The ES (Enhanced Spiral) construction is a Caterpillar proprietary design and impulse tested to twice the industry standards. Cat hoses also work at half the SAE bend radius, allowing tighter routing in a wide variety of applications.

The construction of the hose is made from a fabric-reinforced, synthetic rubber tube; four plies of spirally-wrapped high tensile steel wire reinforcement, separated by layers of synthetic rubber. The outer cover is oil, weather, and abrasion-resistant synthetic rubber.