EN ISO 18752:2025

Rubber hoses and hose assemblies - Wire- or textile-reinforced single-pressure types for hydraulic applications - Specification (ISO 18752:2025)

This document specifies requirements for ten classes, four grades and seven types of wire- or textile-reinforced hydraulic hoses and hose assemblies, of nominal sizes ranging from 5 to 102. Each class has a single maximum working pressure for all sizes.
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 for types AS, AC, BS and BC hoses and from −40 °C to +120 °C for types CS, CC and DC hoses;
—     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 specify requirements for the connection ends. It is limited to the performance of 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.

Gummischläuche und -schlauchleitungen- Draht- oder textilverstärkte Einzeldrucktypen für hydraulische Anwendungen- Spezifikation (ISO 18752:2025)

Dieses Dokument legt Anforderungen an zehn Kategorien, vier Klassen und sieben Typen von draht- oder textilverstärkten Hydraulikschläuchen und  schlauchleitungen mit Nenngrößen im Bereich von 5 bis 102 fest. Jede Kategorie hat bei allen Größen einen einzigen maximalen Betriebsdruck.
Sie sind für den Gebrauch mit:
   ölbasierten Hydraulikflüssigkeiten HH, HL, HM, HR und HV geeignet, wie in ISO 6743 4 festgelegt, bei Temperaturen im Bereich von −40 °C bis +100 °C für Schläuche der Typen AS, AC, BS und BC und von −40 °C bis +120 °C für Schläuche der Typen CS, CC und DC;
   den in ISO 6743 4 festgelegten wasserbasierten Flüssigkeiten HFC, HFAE, HFAS und HFB in einem Temperaturbereich von −40 °C bis +70 °C geeignet;
   Wasser bei Temperaturen im Bereich von 0 °C bis +70 °C geeignet.
Dieses Dokument legt keine Anforderungen an die Anschlussstutzen fest. Es ist auf die Leistung von Schläuchen und Schlauchleitungen begrenzt. Der maximale Betriebsdruck einer Schlauchleitung wird durch den geringsten maximalen Betriebsdruck der Komponenten bestimmt.
ANMERKUNG   Es liegt in der Verantwortung des Benutzers, in Absprache mit dem Schlauchhersteller die Verträglichkeit des Schlauches mit der Flüssigkeit, die verwendet wird, sicherzustellen.

Tuyaux et flexibles en caoutchouc - Types hydrauliques à pression unique, avec armature de fils métalliques ou textiles tressés - Spécifications (ISO 18752:2025)

Le présent document spécifie des exigences pour dix classes, quatre grades et sept types de tuyaux et flexibles hydrauliques avec armature de fils métalliques tressés, de dimensions nominales comprises entre 5 et 102. Chaque classe a une pression maximale de service unique pour toutes les dimensions.
Ils sont adaptés pour une utilisation avec:
—     des fluides hydrauliques HH, HL, HM, HR et HV, tels que définis dans l’ISO 6743-4 pour une plage de températures de –40 °C à +100 °C pour les tuyaux de types AS, AC, BS et BC et de –40 °C à +120 °C pour les tuyaux de types CS, CC et DC;
—     des fluides hydrauliques à base d’eau HFC, HFAE, HFAS et HFB, tels que définis dans l’ISO 6743-4 pour une plage de températures de −40 °C à +70 °C;
—     de l’eau pour une plage de températures de 0 °C à +70 °C.
Le présent document ne spécifie pas d'exigences relatives aux extrémités de raccordement. Il se limite aux performances des tuyaux et flexibles. La pression maximale de service du flexible. La pression maximale de service du flexible est régie par la plus faible pression maximale de service des composants.
NOTE            Il est de la responsabilité de l'utilisateur, en concertation avec le fabricant de tuyaux, d'établir la compatibilité du tuyau avec le fluide destiné à être utilisé.

Gumene cevi in cevni priključki - Vrste hidravličnih cevi in priključkov, ojačenih z žico ali tekstilom, z enojnim delovnim tlakom - Specifikacija (ISO 18752:2025)

Ta dokument določa zahteve za deset razredov, štiri skupine in sedem vrst hidravličnih cevi in cevnih priključkov, ojačenih z žico ali tekstilom, z nazivno velikostjo od 5 do 102. Vsak razred ima en sam največji delovni tlak za vse velikosti. Primerni so za uporabo: –    s hidravličnimi tekočinami na oljni osnovi HH, HL, HM, HR in HV, kot je opredeljeno v standardu ISO 6743-4, pri temperaturah od –40 °C do +100 °C za vrste cevi AS, AC, BS in BC ter od –40 °C do +120 °C za vrste cevi CS, CC in DC; –    s tekočinami na vodni osnovi HFC, HFAE, HFAS in HFB, kot je opredeljeno v standardu ISO 6743-4, pri temperaturah od –40 °C do +70 °C; –    z vodo pri temperaturah od 0 °C do 70 °C. Ta dokument ne vključuje zahtev za priključne konce. Standard je omejen na učinkovitost cevi in cevnih priključkov. Največji delovni tlak cevnega priključka je določen z najnižjim maksimalnim delovnim tlakom elementov. OPOMBA:            Uporabnik mora po posvetovanju s proizvajalcem cevi določiti združljivost cevi z uporabljeno tekočino.

General Information

• Status: Published
• Publication Date: 08-Jul-2025
• ICS: 23.040.70 - Hoses and hose assemblies
• Technical Committee: CEN/TC 218 - Rubber and plastics hoses and hose assemblies
• Drafting Committee: CEN/TC 218/WG 2 - Rubber and plastics hoses and hose assemblies for hydraulic applications
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 09-Jul-2025
• Completion Date: 09-Jul-2025
• Ref Project: SIST EN ISO 18752:2025 - Rubber hoses and hose assemblies - Wire- or textile-reinforced single-pressure types for hydraulic applications - Specification (ISO 18752:2025)

Relations

• Replaces: EN ISO 18752:2022 - Rubber hoses and hose assemblies - Wire- or textile-reinforced single-pressure types for hydraulic applications - Specification (ISO 18752:2022)
• Effective Date: 17-Apr-2024
• Refers: ISO 10619-1:2017 - Rubber and plastics hoses and tubing — Measurement of flexibility and stiffness — Part 1: Bending tests at ambient temperature
• Effective Date: 09-Feb-2026
• Refers: ISO 7233:2021 - Rubber and plastics hoses and hose assemblies — Determination of resistance to vacuum
• Effective Date: 09-Feb-2026
• Refers: ISO 1817:2024 - Rubber, vulcanized or thermoplastic — Determination of the effect of liquids
• Effective Date: 09-Feb-2026
• Refers: ISO 4671:2022 - Rubber and plastics hoses and hose assemblies — Methods of measurement of the dimensions of hoses and the lengths of hose assemblies
• Effective Date: 09-Feb-2026
• Refers: ISO 8330:2022 - Rubber and plastics hoses and hose assemblies — Vocabulary
• Effective Date: 09-Feb-2026
• Refers: ISO 8033:2016 - Rubber and plastics hoses — Determination of adhesion between components
• Effective Date: 09-Feb-2026
• Refers: ISO 1402:2021 - Rubber and plastics hoses and hose assemblies — Hydrostatic testing
• Effective Date: 09-Feb-2026
• Refers: CEN/TR 17474:2020 - Cereals (wheat and barley) - Technical Report of the interlaboratory studies for the determination of moisture and protein in whole kernels by near infrared spectroscopy
• Effective Date: 28-Jan-2026
• Refers: EN 12604:2017/FprA1 - Industrial, commercial and garage doors and gates - Mechanical aspects - Requirements and test methods
• Effective Date: 28-Jan-2026
• Consolidated By: ISO 18752:2025 - Rubber hoses and hose assemblies — Wire- or textile-reinforced single-pressure types for hydraulic applications — Specification
• Effective Date: 12-Feb-2026

Overview

EN ISO 18752:2025 defines international requirements for wire- or textile-reinforced rubber hoses and hose assemblies designed for hydraulic applications. Developed by the European Committee for Standardization (CEN), this standard focuses on hoses intended for single-pressure use, covering a nominal size range from 5 to 102 mm. EN ISO 18752:2025 provides a structured classification system for hoses, encompassing ten pressure classes, four grades based on impulse performance, and seven types distinguished by construction.

This standard applies to hoses and hose assemblies used with various hydraulic fluids, including oil-based and water-based varieties, across typical temperature ranges. It establishes material, performance, and testing requirements but does not specify requirements for the hose fitting connection ends.

Key Topics

• Classification System

  • Ten hose classes, each identified by a single maximum working pressure across all sizes
  • Four grades (A, B, C, D) denoting impulse resistance
  • Seven type variants (standard and compact for each grade)

• Material and Construction

  • Hoses feature a hydraulic-fluid-resistant rubber lining, with reinforcement from steel wire or textile layers
  • Ozone, abrasion, and weather-resistant rubber cover options

• Fluid Compatibility and Temperature Ranges

  • Suitability for oil-based hydraulic fluids (HH, HL, HM, HR, HV per ISO 6743-4) from −40°C to +100°C for certain types, and up to +120°C for others
  • Compatibility with water-based fluids (HFC, HFAE, HFAS, HFB) from −40°C to +70°C
  • Use with water between 0°C and +70°C

• Performance Requirements and Testing

  • Hydrostatic, vacuum, impulse, ozone, and abrasion resistance tests
  • Verification of hose marking, minimum bend radius, adhesion strength, and fluid resistance
  • Routine and type testing requirements to ensure quality and consistency

• Marking and Identification

  • Mandatory labeling of hoses and assemblies with manufacturer details, standard number, type, size, pressure rating, and date codes

Applications

EN ISO 18752:2025 is essential in industries where reliable hydraulic power transmission is critical. Typical practical applications include:

• Construction Equipment
  • Hydraulic systems in excavators, loaders, cranes, and other heavy machinery
• Industrial Machinery
  • Manufacturing automation, presses, and specialized machinery utilizing hydraulic drives
• Agriculture
  • Tractors, harvesters, and agricultural attachments with hydraulic controls
• Mining and Extraction
  • Drilling rigs, hydraulic lifts, and conveying systems
• Transportation and Logistics
  • Hydraulic equipment in trucks, trailers, rail, and cargo handling

By adhering to EN ISO 18752:2025, operators reduce the risk of hose failure, enhance equipment safety, optimize fluid compatibility, and ensure consistent hose performance under demanding conditions.

Related Standards

EN ISO 18752:2025 references and aligns with several key international standards for hydraulic hoses and their testing:

• ISO 6743-4 – Classification of lubricants, including hydraulic fluids
• ISO 1402 – Hydrostatic testing methods for hoses
• ISO 4671 – Measurement of hose dimensions and lengths
• ISO 6803 – Hydraulic-pressure impulse test procedures
• ISO 7233 – Vacuum resistance in hoses
• ISO 7326 – Ozone resistance assessment
• ISO 8033 – Adhesion testing between hose components
• ISO 10619-1/2 – Flexibility and stiffness measurements
• ISO 8331 – Guidelines on packaging and storage of hoses

Organizations selecting hydraulic hoses and assemblies in accordance with EN ISO 18752:2025 are assured of alignment with up-to-date performance, safety, and reliability criteria, as set by global industry standards.

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Keywords: EN ISO 18752:2025, hydraulic hoses, wire-reinforced hoses, textile-reinforced hoses, hydraulic hose assemblies, CEN standards, rubber hoses for hydraulics, hydraulic fluid compatibility, hose performance testing, international standardization for hoses.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2025
Gumene cevi in cevni priključki - Vrste hidravličnih cevi in priključkov, ojačenih z
žico ali tekstilom, z enojnim delovnim tlakom - Specifikacija (ISO 18752:2025)
Rubber hoses and hose assemblies - Wire- or textile-reinforced single-pressure types for
hydraulic applications - Specification (ISO 18752:2025)
Gummischläuche und -schlauchleitungen- Draht- oder textilverstärkte Einzeldrucktypen
für hydraulische Anwendungen- Spezifikation (ISO 18752:2025)
Tuyaux et flexibles en caoutchouc - Types hydrauliques à pression unique, avec
armature de fils métalliques ou textiles tressés - Spécifications (ISO 18752:2025)
Ta slovenski standard je istoveten z: EN ISO 18752:2025
ICS:
23.040.70 Gumene cevi in armature Hoses and hose assemblies
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 18752
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2025
EUROPÄISCHE NORM
ICS 23.040.70 Supersedes EN ISO 18752:2022
English Version
Rubber hoses and hose assemblies - Wire- or textile-
reinforced single-pressure types for hydraulic applications
- Specification (ISO 18752:2025)
Tuyaux et flexibles en caoutchouc - Types hydrauliques Gummischläuche und -schlauchleitungen- Draht- oder
à pression unique, avec armature de fils métalliques ou textilverstärkte Einzeldrucktypen für hydraulische
textiles tressés - Spécifications (ISO 18752:2025) Anwendungen- Spezifikation (ISO 18752:2025)
This European Standard was approved by CEN on 30 June 2025.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 18752:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 18752:2025) has been prepared by Technical Committee ISO/TC 45 " Rubber
and rubber products" in collaboration with Technical Committee CEN/TC 218 “Rubber and plastics
hoses and hose assemblies” the secretariat of which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by January 2026, and conflicting national standards shall
be withdrawn at the latest by January 2026.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 18752:2022.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 18752:2025 has been approved by CEN as EN ISO 18752:2025 without any modification.

International
Standard
ISO 18752
Fifth edition
Rubber hoses and hose
2025-06
assemblies — Wire- or textile-
reinforced single-pressure types
for hydraulic applications —
Specification
Tuyaux et flexibles en caoutchouc — Types hydrauliques à
pression unique, avec armature de fils métalliques ou textiles
tressés — Spécifications
Reference number
ISO 18752:2025(en) © ISO 2025
ISO 18752:2025(en)
© ISO 2025
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
ISO 18752:2025(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Classification . 2
4.1 Classes .2
4.2 Grades and types .3
5 Materials and construction . 3
5.1 Hoses .3
5.2 Hose assemblies .4
6 Dimensions and tolerances . 4
6.1 Diameters .4
6.2 Cover thickness .6
6.3 Concentricity .6
6.4 Length .6
7 Physical properties . 7
7.1 Fluid resistance of rubber compounds .7
7.1.1 Test pieces .7
7.1.2 General .7
7.1.3 Oil resistance .7
7.1.4 Water-based fluid resistance .7
7.1.5 Water resistance .7
7.2 Performance requirements .8
7.2.1 Hydrostatic requirements .8
7.2.2 Change in length .8
7.2.3 Minimum bend radius.8
7.2.4 Resistance to impulse .10
7.2.5 Leakage of hose assemblies .10
7.2.6 Cold flexibility .10
7.2.7 Adhesion between components .10
7.2.8 Vacuum resistance .10
7.2.9 Ozone resistance .11
7.2.10 Abrasion resistance .11
8 Frequency of testing . .11
9 Marking . .11
9.1 Hoses .11
9.2 Hose assemblies . 12
10 Recommendations for packaging and storage .12
11 Information by hose manufacturer .12
12 Test report .12
Annex A (normative) Test frequency for type tests and routine tests .13
Annex B (informative) Information to be provided by hose manufacturer .15
Bibliography .16

iii
ISO 18752:2025(en)
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,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
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
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
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, in collaboration with the European Committee for
Standardization (CEN) Technical Committee CEN/TC 218, Rubber and plastics hoses and hose assemblies, in
accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
This fifth edition cancels and replaces the fourth edition (ISO 18752:2022), which has been technically
revised.
The main changes are as follows:
— addition of Subclause 7.1.2 in order to align the document with the fluid immersion requirements of
ISO 1817;
— revision of Clause 8;
— 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 18752:2025(en)
Rubber hoses and hose assemblies — Wire- or textile-
reinforced single-pressure types for hydraulic applications —
Specification
1 Scope
This document specifies requirements for ten classes, four grades and seven types of wire- or textile-
reinforced hydraulic hoses and hose assemblies, of nominal sizes ranging from 5 to 102. Each class has a
single maximum working pressure for all sizes.
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 for types AS, AC, BS and BC hoses and from −40 °C to +120 °C for types CS, CC
and DC hoses;
— 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 specify requirements for the connection ends. It is limited to the performance
of 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 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 18752:2025(en)
ISO 10619-2, Rubber and plastics hoses and tubing — Measurement of flexibility and stiffness — Part 2: Bending
tests at sub-ambient temperatures
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
4.1 Classes
Ten classes of hose are specified, distinguished by their maximum working pressure, as shown in Table 1.
Each class may be manufactured in up to 14 nominal sizes.
Table 1 — Classes and nominal sizes
Class 35 70
...