ASA Hydraulic and Pneumatic Power System Practice Test

The identification of seals used with mineral base hydraulic fluids is crucial for maintaining system integrity and safety. The correct color code, which is green, signifies that the seals are specifically compatible with mineral oils. This is important because using the correct seal material can prevent leaks and failures within a hydraulic system, ensuring optimal performance and reliability.

In contrast, other color codes correspond to different fluids or applications. For example, red might indicate seals for phosphate esters, which are used in fire-resistant hydraulic fluids, while blue and yellow may denote other specific applications or fluid types altogether. Understanding these color codes helps technicians and engineers quickly identify the appropriate seals for their hydraulic systems, thereby reducing the risk of cross-contamination and damage.