ISO 11237:2025
(Main)Rubber hoses and hose assemblies — Compact wire-braid-reinforced hydraulic types for oil-based or water-based fluids — Specification
Rubber hoses and hose assemblies — Compact wire-braid-reinforced hydraulic types for oil-based or water-based fluids — Specification
This document specifies requirements for five types of compact, wire-braid-reinforced hoses and hose assemblies of nominal size from 5 to 76. They are suitable for use with: — oil-based hydraulic fluids HH, HL, HM, HR and HV as defined in ISO 6743-4 at temperatures ranging from −40 °C to +100 °C; — water-based fluids HFC, HFAE, HFAS and HFB as defined in ISO 6743-4 at temperatures ranging from 0 °C to +70 °C; — water at temperatures ranging from 0 °C to +70 °C. This document does not include requirements for end fittings. It is limited to requirements for hoses and hose assemblies. The hose assembly maximum working pressure is governed by the lowest maximum working pressure of the components. NOTE It is the responsibility of the user, in consultation with the hose manufacturer, to establish the compatibility of the hose with the fluid to be used.
Tuyaux et flexibles en caoutchouc — Types hydrauliques compacts avec armature de fils métalliques tressés pour fluides à base d'huile ou à base d'eau — Spécifications
General Information
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Standards Content (Sample)
International
Standard
ISO 11237
Third edition
Rubber hoses and hose
2025-05
assemblies — Compact wire-braid-
reinforced hydraulic types for
oil-based or water-based fluids —
Specification
Tuyaux et flexibles en caoutchouc — Types hydrauliques
compacts avec armature de fils métalliques tressés pour fluides à
base d'huile ou à base d'eau — Spécifications
Reference number
© ISO 2025
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Published in Switzerland
ii
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Classification . 2
5 Materials and construction . 2
5.1 Hoses .2
5.2 Hose assemblies .2
6 Dimensions . 2
6.1 Hose diameters .2
6.2 Concentricity .4
6.3 Hose cover thickness .4
7 Performance requirements . . 4
7.1 General .4
7.2 Change in length requirements .4
7.3 Hydrostatic requirements .5
7.4 Minimum bend radius .6
7.5 Resistance to impulse.7
7.6 Leakage of hose assemblies .7
7.7 Low temperature flexibility .7
7.8 Adhesion between components .7
7.9 Vacuum resistance .7
7.10 Fluid resistance . . .8
7.10.1 General .8
7.10.2 Oil resistance .8
7.10.3 Water-based fluid resistance .8
7.10.4 Water resistance .8
7.11 Ozone resistance .8
7.12 Visual examination .9
8 Frequency of testing . . 9
9 Marking . . 9
9.1 Hoses .9
9.2 Hose assemblies .9
10 Length of supplied hoses and hose assemblies . 10
Annex A (normative) Test frequency for type tests and routine tests .11
Annex B (informative) Lengths of supplied hoses and length tolerances for hose assemblies .12
Bibliography .13
iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
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with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
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related to conformity assessment, as well as information about ISO's adherence to the World Trade
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This document was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee
SC 1, Rubber and plastics hoses and hose assemblies.
This third edition cancels and replaces the second edition (ISO 11237:2017), which has been technically
revised.
The main changes are as follows:
— revision of the scope to align the water-based fluids and water temperatures with ISO 1436, ISO 3862
and ISO 18752;
— deletion of subclauses 7.5.2 and 7.5.3 on water based and optional impulse tests;
— revision of subclause 7.10.1 to align the document with fluid immersion requirements specified in
ISO 1817;
— addition of subclause 7.10.3, on water based fluid resistance, has been added;
— addition of new hose sizes to type 2SC in Tables 1, 3, 4, 5, 6 and 7;
— revision of Clause 8 to cite Annex A;
— revision of Clause 9;
— revision of Annex A to align the document with ISO 1436.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
International Standard ISO 11237:2025(en)
Rubber hoses and hose assemblies — Compact wire-braid-
reinforced hydraulic types for oil-based or water-based fluids
— Specification
1 Scope
This document specifies requirements for five types of compact, wire-braid-reinforced hoses and hose
assemblies of nominal size from 5 to 76.
They are suitable for use with:
— oil-based hydraulic fluids HH, HL, HM, HR and HV as defined in ISO 6743-4 at temperatures ranging from
−40 °C to +100 °C;
— water-based fluids HFC, HFAE, HFAS and HFB as defined in ISO 6743-4 at temperatures ranging from
0 °C to +70 °C;
— water at temperatures ranging from 0 °C to +70 °C.
This document does not include requirements for end fittings. It is limited to requirements for hoses and
hose assemblies. The hose assembly maximum working pressure is governed by the lowest maximum
working pressure of the components.
NOTE It is the responsibility of the user, in consultation with the hose manufacturer, to establish the compatibility
of the hose with the fluid to be used.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
ISO 1402, Rubber and plastics hoses and hose assemblies — Hydrostatic testing
ISO 1817, Rubber, vulcanized or thermoplastic — Determination of the effect of liquids
ISO 4671, Rubber and plastics hoses and hose assemblies — Methods of measurement of the dimensions of hoses
and the lengths of hose assemblies
ISO 6605, Hydraulic fluid power — Test methods for hoses and hose assemblies
ISO 6803, Rubber or plastics hoses and hose assemblies — Hydraulic-pressure impulse test without flexing
ISO 7233, Rubber and plastics hoses and hose assemblies — Determination of resistance to vacuum
ISO 7326, Rubber and plastics hoses — Assessment of ozone resistance under static conditions
ISO 8033:2016, Rubber and plastics hoses — Determination of adhesion between components
ISO 8330, Rubber and plastics hoses and hose assemblies — Vocabulary
ISO 10619-1:2017, Rubber and plastics hoses and tubing — Measurement of flexibility and stiffness — Part 1:
Bending tests at ambient temperature
ISO 10619-2, Rubber and plastics hoses a
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