ISO 4925:2026

Road vehicles — Specification of non-petroleum-based brake fluids for hydraulic systems

This document provides the specifications, requirements and test methods for non-petroleum-based fluids used in road-vehicle hydraulic brake and clutch systems that are designed for use with such fluids and equipped with seals, cups or double-lipped type gland seals made of styrene-butadiene rubber (SBR) and ethylene-propylene elastomer (EPDM).