scope:

This recommended practice provides a general educational publication covering the following aspects of each of the general types of environmentally acceptable fluids used in hydraulic fluid power systems:

a) product description;

b) biodegradability and toxicity;

c) operating temperatures;

d) foaming and aeration;

e) corrosive properties;

f) effects on protective coatings;

g) wear resistant characteristics;

h) viscosity control;

i) fluid stability;

j) safety in exposure to fluid;

k) spills;

l) contamination;

m) effects on strainers and filters;

n) effects on elastomers;

o) piping and accessory precautions;

p) changing fluids in a system.

This recommended practice:

a) provides a composite reference of pertinent general data on environmentally acceptable fluids;

b) facilitates the design of hydraulic systems that use environmentally acceptable fluids;

c) improves the operation and increases the reliability of hydraulic systems that use environmentally acceptable fluids;

d) establishes fluid maintenance guidelines for environmentally acceptable fluids;

e) provides basic procedures for initial filling or changing types of environmentally acceptable fluids considered for use in hydraulic systems;

f) points out general properties and characteristics of the types of environmentally acceptable fluids considered for use in hydraulic systems.