What does the term “crimping” refer to in hydraulic hose assembly?

Crimping refers specifically to the process of attaching fittings to hydraulic hoses securely. This process involves using a specialized machine or tool to compress a metal sleeve or ferrule around the fitting and the hose, creating a strong and leak-proof connection. This secure attachment is crucial in hydraulic systems, as it ensures the integrity and reliability of the assembly under operational pressures.

Each fitting must be crimped correctly to prevent any failure that could lead to leaks, which could have serious implications in the system's performance. The crimping process also allows for a permanent connection, ensuring that the fittings do not come loose over time due to vibrations or fluid pressures.

In contrast, the other options refer to different aspects of hose assembly or maintenance. Cutting hoses to length is a preparatory step that occurs before assembly, sealing leaks in hoses would involve a different repair method altogether, and testing hoses under no pressure is a safety measure that ensures the hose is free of defects but is not related directly to the crimping process itself.