ISO 1436:2026

Rubber hoses and hose assemblies — Wire-braid-reinforced hydraulic types for oil-based or water-based fluids — Specification

This document specifies requirements for six types of wire-braid-reinforced hoses and hose assemblies of nominal size from 5 to 51. This document also specifies the hose of nominal size 63 for types 2SN and R2AT, and the hose of nominal size 76 for type 2SN. 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 −40 °C to + 70 °C; water at temperatures ranging from 0 °C to + 70 °C. This document does not apply to the connection ends. It is limited to the performance of hoses and hose assemblies. NOTE 1 The hose assembly maximum working pressure is governed by the lowest maximum working pressure of the components. NOTE 2 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 avec armature de fils métalliques tressés pour fluides à base d'huile ou à base d'eau — Spécifications

General Information

• Status: Published
• Publication Date: 13-Jan-2026
• ICS: 23.100.40 - Piping and couplings
• ICS: 83.140.40 - Hoses
• Technical Committee: ISO/TC 45/SC 1 - Rubber and plastics hoses and hose assemblies
• Drafting Committee: ISO/TC 45/SC 1/WG 3 - Hydraulic hoses
• Current Stage: 6060 - International Standard published
• Start Date: 14-Jan-2026
• Due Date: 10-Apr-2026
• Completion Date: 14-Jan-2026

Relations

• Revises: ISO 1436:2020 - Rubber hoses and hose assemblies — Wire-braid-reinforced hydraulic types for oil-based or water-based fluids — Specification
• Effective Date: 13-Apr-2024

Overview

ISO 1436:2026 specifies requirements for six types of wire-braid-reinforced rubber hoses and hose assemblies intended for hydraulic applications. These hoses are designed for use with both oil-based and water-based fluids, covering nominal sizes from 5 to 51, as well as select larger sizes for specific hose types. The standard ensures performance and safety for hoses used in demanding environments, with operational temperature ranges appropriate for various fluids as defined in ISO 6743-4.

This international standard, developed by the International Organization for Standardization (ISO), focuses on the construction, performance, dimensions, and test methods for hydraulic hose assemblies, without addressing hose connection ends.

Key Topics

ISO 1436:2026 covers several critical aspects of rubber hoses and hydraulic hose assemblies, including:

• Classification: Specifies six hose types (1ST, 2ST, 1SN, R1AT, 2SN, R2AT), distinguished by wire reinforcement layers and cover thickness. Types 1ST and 2ST are not recommended for new designs.
• Performance Requirements: Encompasses hydrostatic and burst pressure, minimum bend radius, impulse resistance, vacuum resistance, low temperature flexibility, and abrasion for each hose type and size.
• Material and Construction: Outlines hose composition, including oil- and water-resistant inner linings, high-tensile steel wire reinforcement, and durable outer rubber covers.
• Testing and Quality Assurance: Includes guidelines for type and routine tests such as hydrostatic, leakage, adhesion, and ozone resistance according to ISO and related standards.
• Marking and Identification: Details required hose and assembly markings for traceability, including manufacturer, type, nominal size, pressure rating, and production date.

Applications

Rubber hoses and hose assemblies compliant with ISO 1436:2026 are essential in hydraulic systems across industries requiring strength, flexibility, and chemical compatibility. Typical applications include:

• Industrial Hydraulic Systems: Used in manufacturing machinery, injection molding, and presses where controlled fluid power is necessary.
• Construction and Agriculture Equipment: Essential in excavators, tractors, and loaders requiring reliable hydraulic function in challenging environments.
• Automotive and Transport: Supports hydraulic braking, steering, and transmission systems.
• Maintenance and Repair Operations (MRO): Ensures spare or replacement hoses meet stringent global specifications for compatibility and safety.

By adhering to ISO 1436, manufacturers, distributors, and users benefit from hoses and assemblies with standardized performance, reliability under specified temperature and pressure limits, and clear traceability. The standard's focus on routine and type testing, marking, and compatibility also simplifies procurement and maintenance processes.

Related Standards

ISO 1436:2026 references and relates closely to several international standards for hose testing, materials, and terminology, including:

• ISO 1402: Hydrostatic testing of rubber and plastics hoses and hose assemblies
• ISO 1817: Effects of liquids on vulcanized or thermoplastic rubbers
• ISO 4671: Methods of measurement for hose dimensions
• ISO 6803: Hydraulic-pressure impulse tests for hoses and assemblies
• ISO 7233: Vacuum resistance assessment
• ISO 7326: Assessment of ozone resistance in hoses
• ISO 8033: Adhesion tests between hose components
• ISO 6743-4: Classification of hydraulic fluids
• EN 853: European specification for wire-braid-reinforced hydraulic hoses

By aligning with ISO 1436:2026, organizations ensure international compatibility, robust performance, and safety in hydraulic hose applications, supporting globally recognized best practices in design, testing, and usage.

Standards Content (Sample)

International
Standard
ISO 1436
Seventh edition
Rubber hoses and hose
2026-01
assemblies — Wire-braid-
reinforced hydraulic types for
oil-based or water-based fluids —
Specification
Tuyaux et flexibles en caoutchouc — Types hydrauliques avec
armature de fils métalliques tressés pour fluides à base d'huile ou
à base d'eau— Spécifications
Reference number
© ISO 2026
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
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 and hose concentricity .2
6.2 Length .4
7 Performance requirements . . 4
7.1 General .4
7.2 Hydrostatic requirements .4
7.3 Minimum bend radius .5
7.4 Resistance to impulse.5
7.5 Leakage of hose assemblies .6
7.6 Low temperature flexibility .6
7.7 Adhesion between components .6
7.8 Vacuum resistance .6
7.9 Abrasion resistance . .6
7.10 Fluid resistance . . .7
7.10.1 General .7
7.10.2 Oil resistance .7
7.10.3 Water-based fluid resistance .7
7.10.4 Water resistance .7
7.11 Ozone resistance .7
7.12 Visual examination .7
8 Frequency of testing . . 8
9 Marking . . 8
9.1 Hoses .8
9.2 Hose assemblies .8
Annex A (normative) Test frequency for type tests and routine tests .10
Annex B (informative) Recommendations for lengths of supplied hoses and tolerances on
length of 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
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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
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related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
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 seventh edition cancels and replaces the sixth edition (ISO 1436:2020), which has been technically
revised.
The main changes are as follows:
— revision of Clause 8 to state that the manufacturer should define the frequency of type testing;
— revision of Annex A;
— deletion of Annex B.
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 1436:2026(en)
Rubber hoses and hose assemblies — Wire-braid-reinforced
hydraulic types for oil-based or water-based fluids —
Specification
1 Scope
This document specifies requirements for six types of wire-braid-reinforced hoses and hose assemblies of
nominal size from 5 to 51. This document also specifies the hose of nominal size 63 for types 2SN and R2AT,
and the hose of nominal size 76 for type 2SN.
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
−40 °C to + 70 °C;
— water at temperatures ranging from 0 °C to + 70 °C.
This document does not apply to the connection ends. It is limited to the performance of hoses and hose
assemblies.
NOTE 1 The hose assembly maximum working pressure is governed by the lowest maximum working pressure of
the components.
NOTE 2 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 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 10619-2:2021, Rubber and plastics hoses and tubing — Measurement of flexibility and stiffness — Part 2:
Bending tests at sub-ambient temperatures
ISO/TS 20444, Rubber and plastics hoses — Determination of abrasion resistance of the outer cover
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 8330 apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
4 Classification
Six types of hose are specified, distinguished by their construction, working pressure and oil resistance:
— type 1ST: hoses with a single braid of wire reinforcement and having a thick cover;
— type 2ST: hoses with two braids of wire reinforcement and having a thick cover;
— types 1SN and R1AT: hoses with a single braid of wire reinforcement and having a thin cover;
— types 2SN and R2AT: hoses with two braids of wire reinforcement and having a thin cover.
Types 1ST and 2ST should not be used for new design.
NOTE Types 1SN and R1AT and types 2SN and R2AT have the same reinforcement dimensions as type 1ST and
type 2ST, respectively, except that they have thinner covers designed to assemble with fittings without removal of the
cover or a portion of the cover.
5 Materials and construction
5.1 Hoses
Hoses shall consist of a rubber lining resistant to oil- or water-based hydraulic fluids or water, one or two
layers of high-tensile steel wire and a weather-, oil- and abrasion-resistant rubber cover.
5.2 Hose assemblies
Hose assemblies shall be manufactured using hoses that conform to the requirements of this document.
Hose assemblies shall be manufactured only with those hose fittings whose correct functioning has been
verified in accordance with 7.2, 7.4, 7.5 and 7.6. The manufacturer's instructions shall be followed for the
preparation and fabrication of hose assemblies.
6 Dimensions
6.1 Hose diameters and hose concentricity
The test shall be carried out in accordance with ISO 4671. The inside diameter and the diameter over
reinforcement of hoses shall conform to the values given in Table 1.
The test shall be carried out in accordance with ISO 4671. The outside diameter of hoses and cover thickness
(where appropriate) shall conform to the values given in Table 2.

The test shall be carried out in accordance with ISO 4671. The concentricity of hoses shall conform to the
values given in Table 3.
Table 1 — Inside diameters and diameter over the reinforcement of hoses
All types Types R1AT, 1SN, 1ST Types R2AT, 2SN, 2ST
Nominal Inside diameter Diameter over the reinforcement
a
size mm mm
min. max. min. max. min. max.
5 4,6 5,4 9,0 10,0 10,6 11,6
6,3 6,2 7,0 10,6 11,6 12,1 13,3
8 7,7 8,5 12,1 13,3 13,7 14,9
10 9,3 10,1 14,5 15,7 16,1 17,3
12,5 12,3 13,5 17,5 19,1 19,0 20,6
16 15,5 16,7 20,6 22,2 22,2 23,8
19 18,6 19,8 24,6 26,2 26,2 27,8
25 25,0 26,4 32,5 34,1 34,1 35,7
31,5 31,4 33,0 39,3 41,7 43,3 45,7
38 37,7 39,3 45,6 48,0 49,6 52,0
51 50,4 52,0 58,7 61,7 62,3 64,7
b
63 62,3 64,7 — — 72,2 73,8
c
76 75,0 77,4 — — 87,0 88,6
a
The hose sizes correspond to those given in ISO 1307.
b
This hose size is for types R2AT and 2SN only.
c
This hose size is for type 2SN only.
Table 2 — Outside diameters and cover thickness of hoses
Type 1ST Types 1SN, R1AT Type 2ST Types 2SN, R2AT
Outside Outside Cover Outside Outside Cover
Nominal
diameter diameter thickness diameter diameter thickness
a
size
mm mm mm mm mm mm
min. max. max. min. max. min. max. max. min. max.
5 11,9 13,5 12,5 0,8 1,5 15,1 16,7 14,1 0,8 1,5
6,3 15,1 16,7 14,1 0,8 1,5 16,7 18,3 15,7 0,8 1,5
8 16,7 18,3 15,7 0,8 1,5 18,3 19,9 17,3 0,8 1,5
10 19,0 2
...