ISO 23384:2021 Rubber and plastics hoses and hose assemblies, wire or textile reinforced types with working pressure equal or above 70 MPa [700 bar)一Specification.
8.6 Cold flexibility
When tested in accordance with method B of ISO 10619-2:2017 at a temperature of —40 °C, there shall be no cracking of the lining or cover. The test piece shall not leak or crack when subjected to a proof pressure test in accordance with ISO 1402 after regaining ambient temperature.
8.7 Ozone resistance
When tested in accordance with method I or 2 of ISO 7326:2016, depending on the nominal bore of the hose, no cracking or deterioration of the cover shall he visible under x2 magnification.
8.8 Adhesion between components (only for rubber hoses)
When tested in accordance with ISO 8033, the adhesion between liii ing and reinforcement, and between cover and reinforcement shall not he less than 2,0 kN/m for rubber hoses.
8.9 Resistance to tensile force
The hose assemblies shall withstand a tensile force equivalent to that induced by minimum burst pressure. Hose assembly shall be clamped at fittings in a tensile test machine and subjected to a tensile load equal to the hose internal cross-sectional area times minimum burst pressure. Tensile test machine traverse travel rate shall be 25 mm/mm. There shall be no visible failures. Hose OD reduction is permitted.
8.10 Fluid resistance
8.10.1 Test pieces
The fluid resistance tests specified in 8.10.2 to 8.10.4 shall be carried out on moulded sheets of lining and cover material having a minimum thickness of 2 mm.
8.10.2 Oil resistance
When determined in accordance with ISO 1817 by immersion in oil No.3 oil for 72_s h at a temperature of 100 °C ± 3 °C, the percentage change in volume of the lining and cover shall be between —15 % and
8.10.3 Water-based fluid resistance
When determined in accordance with ISO 1817 by immersion in a test fluid made up of equal volumes of 1,2-ethanediol and distilled water for 168h at a temperature of 70°C ± 1 °C, the percentage change in volume of the lining and cover shall be between —15 % and +35 96.
8.10.4 Water resistance
When determined in accordance with ISO 1817 by immersion in distilled water for 168_h at a temperature of 70 °C ± I °C, the percentage change in volume of the lining and cover shall he between
—15 % and +35 %.
8.11 Visual examination
Hoses shall be examined for visible defects in the outer cover and to verify that the hose identification is correct and has been properly marked. Hose assemblies shall, in addition, be inspected to verify that the correct fittings are fitted.
ISO 23384 pdf download.