Establish a uniform guide for defining the degree of external leakage on a hydraulic system. The leakage classifications include dusty and dust-free conditions. The choice of classification is intended to be by visual means rather than with the aid of instruments. It describes the leakage state at the observed time, considering that the state may change over a period of time.
SAE J1176-1986 history
2012SAE J1176-2012 External Leakage Classifications for Hydraulic Systems
1986SAE J1176-1986 External Leakage Classifications for Hydraulic Systems
1977SAE J1176-1977 External Leakage Classifications for Hydraulic Systems