Lubricants, industrial oils and related products (class L) - Classification - Part 4: Family H (Hydraulic systems) (ISO 6743-4:1999)

This standard provides a classification system for lubricants, industrial oils, and related products within the category L. It specifically addresses the H class, which is designated for use in hydraulic systems. The document outlines the criteria and specifications necessary for the identification and application of these fluids. It includes details on the properties and performance characteristics relevant to hydraulic systems. The standard is structured to ensure consistency and clarity in the classification process. It serves as a reference for manufacturers, users, and regulators in the industry. The content is based on international guidelines and has been adapted to meet specific requirements. The document is organized into sections that define the classification parameters and their implications.