WARNING — The handling and use of products as specified in this document can be hazardous if suitable precautions are not observed. This document does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this document to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use.

This document specifies the minimum requirements of unused fire-resistant and less flammable hydraulic fluids for hydrostatic and hydrodynamic systems in general industrial applications. It is not intended for use in aerospace or power-generation applications, where different requirements apply. It provides guidance for suppliers and end users of these less hazardous fluids and to the manufacturers of hydraulic equipment in which they are used.

Of the categories covered by ISO 6743-4, which classifies the different types of fluids used in hydraulic applications, only the following are detailed in this document: HFAE, HFAS, HFB, HFC, HFDR and HFDU.

Types HFAE, HFAS, HFB, HFC and HFDR are "fire-resistant" fluids as defined by ISO 5598. Most HFDU fluids, while displaying an improvement in combustion behaviour over mineral oil, fall outside this definition and are more appropriately considered as "less flammable" fluids.

Cross References:
ISO 15029-1
ISO 6296:2000
ISO 3448
ISO 20763
ISO 760
ISO 7120
ISO 5598
ISO 4263-2
ISO 7745
ISO 12185
ISO 6619
ISO 9120
ISO 20843
ISO 4404-2
ISO 6618
ISO 4259-2
ISO 14935
ISO 20764
EN 14832
ISO 20623
ISO 20783-1
ISO 20823
EN 14833
ISO 3170
ISO 14635-1
ISO 20844
ISO 6743-4
ISO 3675
ISO 6072
ISO 4404-1
ISO 3104
ISO 4263-3
ISO 6247
ISO 2160
ISO 15029-2
ISO 20783-2
CEN/TR 14489:2005


All current amendments available at time of purchase are included with the purchase of this document.