What is ISO 15380 - Specifications for hydraulic fluids in categories HETG, HEPG, HEES, and HEPR about?
ISO 15380 specifies the requirements for environmentally acceptable hydraulic fluids and is intended for hydraulic systems, particularly hydraulic fluid power systems. The purpose of ISO 15380 is to provide guidance for suppliers and users of environmentally acceptable hydraulic fluids and for the direction of original equipment manufacturers of hydraulic systems.
ISO 15380 stipulates the requirements for environmentally acceptable hydraulic fluids at the time of delivery. Classification of fluids used in the hydraulic application is defined in ISO 6743-4.
ISO 15380 encompasses only four of the categories of environmentally acceptable fluids covered by ISO 6743-4. These categories are HETG, HEPG, HEES and HEPR.
Note: The minimum content of base fluid for each category shall not be less than 70 % (m/m).
Who is ISO 15380 - Specifications for hydraulic fluids in categories HETG, HEPG, HEES, and HEPR for?
ISO 15380 on Specifications for hydraulic fluids in categories HETG, HEPG, HEES, and HEPR is useful for:
- Producers of hydraulic fluids
- Suppliers and users of environmentally acceptable hydraulic fluids
- Environment protection agencies
Why should you use ISO 15380 - Specifications for hydraulic fluids in categories HETG, HEPG, HEES, and HEPR?
ISO 15380 gives specifications for environmentally acceptable hydraulic fluids (HE). These fluids are readily biodegradable and have a low eco-toxicity. They are designed to minimize the impact upon the environment in the event of a leak or spill.
ISO 15380 contains three informative annexes.
- Annex A provides guidelines for changing fluids from mineral‑based oils to environmentally acceptable fluids
- Annex B provides additional information on shear stability
- Annex C covers the disposal of hydraulic fluids
What’s changed since the last update?
BS ISO 15380:2016 supersedes ISO 15380:2011. BS ISO 15380:2016 has been technically revised.

