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This SAE Recommended Practice establishes a uniform guide for defining the degree of external leakage on a hydraulic system. The leakage classifications include dustry 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.

This Information Report is intended to provide reference material for the selection and use of fire-resistant fluids in the hydraulic systems of off-road work machinery with separate hydraulic oil sump.

Applies to hydraulic cylinders which are components of self-propelled work machines defined in SAE J1116.

Applies to hydraulic seals used to seal the rod of hydraulic cylinders which are components of self-propelled work machines defined in SAE J1116.

Applies to hydraulic cylinders which are components of off-road self-propelled work machines defined in SAE J1116.

Applies to hydraulic seals used to seal the rods of hydraulic cylinders which are components of Off-Road Self-Propelled Work Machines defined in SAE J1116.

Applies to hydraulic seals used to seal the rods of hydraulic cylinders which are components of off-road self-propelled work machines defined in SAE J1116.

This SAE Recommended Practice has been formulated to advance and endorse the use of the ISO (International Organization for Standardization) Solid Contaminant Code as the universal means for expressing the level of particulate contaminant in hydraulic fluid and for specifying acceptable limits of cleanliness. Worldwide approval was gained for this coding system because it provides a simple, unmistakable, meaningful, and consistent means of communication between suppliers and users. The code applies to all types of hydraulic (liquid) fluids used in fluid power and control systems as applied to self-propelled machines as referenced in J1116.