ISO/FDIS 17324

• Abstract:

  ISO 17324:2014 specifies requirements of rubber hoses used in the automotive turbocharger system to connect turbocharger, intercooler, and internal combustion engine at the working temperatures from −40°C to +250°C and the working pressures from −0,01MPa(−0,1bar) to 0,5MPa(5bar). Hoses covered by ISO 17324:2014 may be straight or shaped.

• Status: Not Published
• ICS: 43.040.01 - Road vehicle systems in general
• 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 2 - Automotive hoses
• Current Stage: 5020 - FDIS ballot initiated: 2 months. Proof sent to secretariat
• Start Date: 16-Sep-2026
• Completion Date: 16-Sep-2026

• Revises: ISO 17324:2014 - Rubber hoses for automotive turbochargers — Specification
• Effective Date: 11-Jan-2025

Overview

ISO/FDIS 17324:2026 specifies the requirements for rubber hoses used in automotive turbocharger systems. These hoses are critical components that connect the turbocharger, intercooler, and internal combustion engine, operating under working temperatures from −40°C to +250°C and pressures from −0.01 MPa (−0.1 bar) up to 0.5 MPa (5 bar). The standard is applicable to both straight and shaped hoses, ensuring they meet rigorous criteria for performance, durability, and safety. Adherence to ISO 17324 enhances system reliability, supports quality assurance, and facilitates global trade in automotive components.

Key Topics

• Classification of Hoses: ISO 17324 classifies hoses based on application:
  • Type A: Connects air filter and turbocharger (low pressure, up to +100°C)
  • Type B: Connects turbocharger and intercooler (higher temperature/pressure, up to +250°C; further divided into B1, B2, B3 subtypes and performance classes)
  • Type C: Connects intercooler and internal combustion engine (pressurized/cooled air, up to +140°C)
• Material and Construction: Specifies materials including EPDM, CM, CR, ECO, AEM, ACM, VMQ, FKM, and textile or wire reinforcement. Hose construction includes linings, reinforcement, and covers; may feature additional protection like glass fibre cloth or heat insulation.
• Physical and Mechanical Properties: Sets out requirements for heat aging, oil resistance, low-temperature brittleness, ozone resistance, burst pressure, vacuum resistance, adhesion, and fatigue resistance.
• Dimensions and Tolerances: Details inside diameter, wall thickness, length, and end squareness tolerances to ensure compatibility and leak prevention.
• Testing and Quality Control: Provides type tests, routine tests, and recommended production tests for physical and performance properties, ensuring ongoing compliance.
• Marking and Traceability: Requires clear, continuous marking on hoses with manufacturer, standard reference, hose type/class/grade, dimensions, pressure rating, and manufacturing date.
• Storage Recommendations: Refers to ISO 8331 for storage guidelines ensuring product longevity before installation.

Applications

The practical scope of ISO 17324 is broad, supporting automotive manufacturers, component suppliers, and service providers. Conforming hoses are designed for:

• Automotive turbocharger systems in passenger cars, commercial vehicles, and special-purpose vehicles
• High-temperature and high-pressure connections between turbochargers, intercoolers, and engines
• Replacement and aftermarket hose assemblies where robust temperature, pressure, and fatigue resistance are essential
• OEM and tier-1 supplier quality assurance processes
• Custom or shaped hoses for complex under-hood routing

By implementing ISO 17324 specifications, organizations can ensure hoses deliver consistent performance, reducing the risk of turbocharger or engine failures and supporting compliance with automotive industry quality systems.

Related Standards

Several international standards are referenced by or complement ISO 17324:

• ISO 188: Rubber - Accelerated ageing and heat resistance tests
• ISO 812: Rubber - Low-temperature brittleness testing
• ISO 1402: Hydrostatic testing of rubber and plastics hoses
• ISO 1431-1: Ozone resistance of rubber
• ISO 1817: Effect of liquids on rubber
• ISO 4671: Measurement of hose dimensions
• ISO 7233: Vacuum resistance of hoses
• ISO 8033: Adhesion between hose components
• ISO 8330: Hose vocabulary
• ISO 8331: Hose storage guidelines
• ISO 28702: Sub-ambient crush testing for textile-reinforced hoses

Adopting ISO 17324 and related standards establishes a foundation for global harmonization in hose design, testing, and supply for automotive turbocharging applications.

FINAL DRAFT
International
Standard
ISO/TC 45/SC 1
Rubber hoses for automotive
Secretariat: DIN
turbochargers — Specification
Voting begins on:
Tuyaux en caoutchouc pour turbocompresseurs automobiles — 2026-09-16
Spécifications
Voting terminates on:
2026-11-11
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
FINAL DRAFT
International
Standard
ISO/TC 45/SC 1
Rubber hoses for automotive
Secretariat: DIN
turbochargers — Specification
Voting begins on:
Tuyaux en caoutchouc pour turbocompresseurs automobiles —
Spécifications
Voting terminates on:
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
© ISO 2026
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
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 Reference number
ii
ISO/FDIS 17324:2026(en)
Contents  Page
Foreword .iv
1 Scope . 1
2  Normative references . 1
3  Terms and definitions . 1
4  Classification . 2
4.1 Types and classes .2
4.2 Grades .2
5  Materials and construction . 2
5.1 Materials .2
5.2 Construction .3
6  Dimensions and tolerances . 4
6.1 Inside diameter, wall thickness, and length tolerance .4
6.2 Hose end squareness .4
7 Physical properties . 5
7.1 Rubber compounds .5
7.2 Hose .7
7.2.1 Appearance .7
7.2.2 Vacuum resistance (only for Type A) .7
7.2.3 Proof pressure (for Type B and C) .7
7.2.4 Minimum burst pressure (for Type B and C) .7
7.2.5 Adhesion .8
7.2.6 Fatigue resistance (for Type B and C).8
7.2.7 Sub-ambient crush resistance .8
8  Frequency of testing . . 8
9  Marking . . 8
10 Storage . 9
Annex A (normative)  Fatigue resistance test . 10
Annex B (normative)  Type and routine tests .12
Annex C (informative)  Recommended production tests .13
Bibliography . 14

iii
ISO/FDIS 17324:2026(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.
This second edition cancels and replaces the first edition (ISO 17324:2014), which has been technically
revised.
The main changes are as follows:
— addition of requirements for shaped hoses in 7.2.2 and 7.2.3;
— modification of the interval for the type test in Clause 8.
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
FINAL DRAFT International Standard ISO/FDIS 17324:2026(en)
Rubber hoses for automotive turbochargers — Specification
1 Scope
This document specifies requirements of rubber hoses used in the automotive turbocharger system to
connect the turbocharger, intercooler, and internal combustion engine at working temperatures from −40 °C
to +250 °C and the working pressures from −0,01 MPa (−0,1 bar) to 0,5 MPa (5 bar).
This document applies to straight or shaped hoses.
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 188, Rubber, vulcanized or thermoplastic — Accelerated ageing and heat resistance tests
ISO 812, Rubber, vulcanized or thermoplastic — Determination of low-temperature brittleness
ISO 1402, Rubber and plastics hoses and hose assemblies — Hydrostatic testing
ISO 1431-1, Rubber, vulcanized or thermoplastic — Resistance to ozone cracking — Part 1: Static and dynamic
strain 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 7233:2021, Rubber and plastics hoses and hose assemblies — Determination of resistance to vacuum
ISO 8033, Rubber and plastics hoses — Determination of adhesion between components
ISO 8330, Rubber and plastics hoses and hose assemblies — Vocabulary
ISO 28702, Rubber and plastics hoses and tubing — Textile-reinforced types — Sub-ambient temperature crush
test
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/

ISO/FDIS 17324:2026(en)
4  Classification
4.1  Types and classes
The hoses are classified into three types as per the intended operating conditions.
— Type A: Hose for connecting air filter and turbocharger, to transfer filtered atmospheric air. Working
temperature from −40 °C to +100 °C, and vacuum pressure low to −0,01 MPa (−0,1 bar).
— Type B: Hose for connecting turbocharger and intercooler, to transfer the pressurized and heated air.
Working temperature from −40 °C to +250 °C.
Type B is subdivided into three subtypes as per working temperature and further classified
into classes as per maximum working pressures. The subtypes and classes are shown in Table 1.
Table 1 — Subtypes and classes for Type B
Class
Working temperature
1 2 3
Type
°C
Maximum working pressure
MPa (bar)
B1 −40 to +180 0,16(1,6) 0,22(2,2) 0,28(2,8)
B2 −40 to +220 0,20(2,0) 0,28(2,8) 0,34(3,4)
B3 −40 to +250 0,30(3,0) 0,40(4,0) 0,50(5,0)
— Type C: Hose for connecting intercooler and internal combustion engine, to transfer the pressurized
and cooled air. Working temperature from −40 °C to +140 °C and maximum working pressure 0,3 MPa
(3 bar).
4.2 Grades
Type B and C of hose are classified into two grades as per fatigue resistance:
— Grade 200 – 200 000 impulse cycles;
— Grade 400 – 400 000 impulse cycles.
5  Materials and construction
5.1 Materials
The typical materials for the types of hoses are listed in Table 2.

ISO/FDIS 17324:2026(en)
Table 2 — Hose type and typical material
Type Lining Reinforcement Cover
a a
EPDM EPDM
b b
CM CM
c c
j
CR CR
PET
d k d
A/C ECO PA ECO
e wire e
AEM AEM
f f
ACM ACM
g g
VMQ VMQ
e e
AEM AEM
j
PET
f f
B1 ACM ACM
l
AR
g g
VMQ VMQ
h g
FKM VMQ
l
B2/B3 AR
i g
FVMQ VMQ
a
EPDM — terpolymer of ethylene, propylene, and a diene with the residual
unsaturated portion of the polymerized diene in the side chain.
b
CM — chloropolyethylene.
c
CR — chloroprene rubber.
d
ECO — copolymer of ethylene oxide (oxirane) and chloromethyloxirane (also
known as epichlorohydrin copolymer or rubber).
e
AEM — copolymer of ethyl acrylate (or other acrylates) and ethylene.
f
ACM — copolymer of ethyl acrylate (or other acrylates) and a small amount of a
monomer which facilitates vulcanization (usually known as acrylic rubber).
g
VMQ — silicone rubber having both methyl and vinyl substituent groups on the
polymer chain.
The letter for substituent group(s) on the polymer chain is inserted to the left of the
code letter for rubber with silicon and oxygen in the backbone (Q) in descending order
of percent present, i.e. largest nearest the “Q”
h
FKM — fluoro rubber having substituent fluoro, perfluoroalkyl, or perfluoroalkoxy
groups on the polymer chain.
i FMVQ — silicone rubber having methyl, vinyl, and fluorine substituent groups on
the polymer chain.
j
PET — poly(ethylene terephthalate) fibre.
k
PA — polyamide.
l
AR — Aramid.
5.2  Construction
The hoses shall consist of:
— a flexibl
...

ISO/DISFDIS 17324:2025(en)
ISO/TC 45/SC 1
Secretariat: DIN
Date: 2026-03-1209-02
Rubber hoses for automotive turbochargers — Specification
Tuyaux en caoutchouc pour turbocompresseurs automobiles — Spécifications
FDIS stage
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: + 41 22 749 01 11
EmailE-mail: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
ISO/DISFDIS 17324:2026(en)
Contents
Foreword . iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Classification. 2
4.1 Types and classes . 2
4.2 Grades . 2
5 Materials and construction . 2
5.1 Materials . 2
5.2 Construction . 3
6 Dimensions and tolerances . 4
6.1 Inside diameter, wall thickness, and length tolerance . 4
6.2 Hose end squareness . 4
7 Physical properties . 5
7.1 Rubber compounds . 5
7.2 Hose . 8
8 Frequency of testing . 9
9 Marking . 9
10 Storage . 10
Annex A (normative) Fatigue resistance test . 11
Annex B (normative) Type and routine tests . 13
Annex C (informative) Recommended production tests . 14
Bibliography . 15

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, 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.
This second edition cancels and replaces the first edition (ISO 17324:2014), which has been technically
revised.
The main changes are as follows:
— — addition of requirements for shaped hoses in 7.2.27.2.2 and 7.2.37.2.3;;
— — modification of the interval for the type test in Clause 8Clause 8.
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
DRAFT International Standard ISO/DIS 17324:2025(en)

Rubber hoses for automotive turbochargers — Specification
1 Scope
This document specifies requirements of rubber hoses used in the automotive turbocharger system to connect
the turbocharger, intercooler, and internal combustion engine at working temperatures from −40 °C to
+250 °C and the working pressures from −0,01 MPa (−0,1 bar) to 0,5 MPa (5 bar).
This document applies to straight or shaped hoses.
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 188, Rubber, vulcanized or thermoplastic — Accelerated ageing and heat resistance tests
ISO 812, Rubber, vulcanized or thermoplastic — Determination of low-temperature brittleness
ISO 1402, Rubber and plastics hoses and hose assemblies — Hydrostatic testing
ISO 1431--1, Rubber, vulcanized or thermoplastic — Resistance to ozone cracking — Part 1: Static and dynamic
strain 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 7233:2021, Rubber and plastics hoses and hose assemblies — Determination of resistance to vacuum
ISO 8033, Rubber and plastics hoses — Determination of adhesion between components
ISO 8330, Rubber and plastics hoses and hose assemblies — Vocabulary
ISO 28702, Rubber and plastics hoses and tubing — Textile-reinforced types — Sub-ambient temperature crush
test
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 Types and classes
The hoses are classified into three types as per the intended operating conditions.
— — Type A: Hose for connecting air filter and turbocharger, to transfer filtered atmospheric air. Working
temperature from −40 °C to +100 °C, and vacuum pressure low to −0,01 MPa (−0,1 bar).
— — Type B: Hose for connecting turbocharger and intercooler, to transfer the pressurized and heated air.
Working temperature from −40 °C to +250 °C.
Type B is subdivided into three subtypes as per working temperature and further classified into classes
as per maximum working pressures. The subtypes and classes are shown in Table 1Table 1.
Table 1 — Subtypes and classes for Type B
Class
Working temperature
1 2 3
Type
°C
Maximum working pressure
MPa (bar)
B1 −40 to +180 0,16(1,6) 0,22(2,2) 0,28(2,8)
B2 −40 to +220 0,20(2,0) 0,28(2,8) 0,34(3,4)
B3 −40 to +250 0,30(3,0) 0,40(4,0) 0,50(5,0)
— — Type C: Hose for connecting intercooler and internal combustion engine, to transfer the pressurized
and cooled air. Working temperature from −40 °C to +140 °C and maximum working pressure 0,3 MPa
(3 bar).
4.2 Grades
Type B and C of hose are classified into 2two grades as per fatigue resistance:
— — Grade 200 – 200 000 impulse cycles;
— — Grade 400 – 400 000 impulse cycles.
5 Materials and construction
5.1 Materials
The typical materials for the types of hoses are listed in Table 2Table 2.
Table 2 — Hose type and typical material

Type Lining Reinforcement Cover
a a
EPDM EPDM
j
PET
b b
CM CM
k
A/C PA
c c
CR CR
wire
d d
ECO ECO
ISO/DISFDIS 17324:20252026(en)
Type Lining Reinforcement Cover
e e
AEM AEM
f f
ACM ACM
g g
VMQ VMQ
e e
AEM AEM
j
PET
f f
B1 ACM ACM
l
AR
g g
VMQ VMQ
h g
FKM VMQ
l
B2/B3 AR
i g
FVMQ VMQ
a  EPDM — terpolymer of ethylene, propylene, and a diene with the residual
unsaturated portion of the polymerized diene in the side chain.
b  CM — chloropolyethylene.
c  CR — chloroprene rubberAramidrubber.
d  ECO — copolymer of ethylene oxide (oxirane) and chloromethyloxirane (also
known as epichlorohydrin copolymer or rubber)).
e  AEM — copolymer of ethyl acrylate (or other acrylates) and ethylene.
f  ACM — copolymer of ethyl acrylate (or other acrylates) and a small amount of a
monomer which facilitates vulcanization (usually known as acrylic rubber)).
g  VMQ — silicone rubber having both methyl and vinyl substituent groups on the
polymer chain.
The letter for substituent group(s) on the polymer chain is inserted to the left of the code
letter for rubber with silicon and oxygen in the backbone (Q) in descending order of
percent present, i.e. largest nearest the “Q”
h  FKM — fluoro rubber having substituent fluoro, perfluoroalkyl, or perfluoroalkoxy
groups on the polymer chain.
i FMVQ — silicone rubber having methyl, vinyl, and fluorine substituent groups on
the polymer chain.
j  PET — poly(ethylene terephthalate) fibre.
k  PA — polyamide.
l  AR — Aramid.
5.2 Construction
The hoses shall consist of:
— — a flexible polymeric elastomers lining;
— — a synthetic textile reinforcement or other reinforcements, applied by any suitable technique;
— — a flexible polymeric elastomers cover.
Hose body may have a smooth or corrugated finish, and be further reinforced with wire at suitable positions,
and may be covered with glass fibre cloth with aluminium-foil paper, or heat insulation or abrasion resistant
jacket made of thermoplastic material on suitable position.
Type A may be rubber tubing without reinforcement.
6 Dimensions and tolerances
6.1 Inside diameter, wall thickness, and length tolerance
Unless otherwise specified, the measurement shall be carried out in accordance with ISO 4671. Inside
diameters and wall thicknesses shall be as specified in Table 3Table 3 and length tolerances shall be as
specified in Table 4Table 4.
Table 3 — Inside diameter, wall thickness tolerance
Dimensions in millimetres
Tolerance of wall
Inside diameter and tolerance
thickness
Extruded Wrapped
Inside diameter Tolerance
a
hose hose
+0,5
≤ 50  ±0,3 ±0,5
−1,3
+0,5
> 50 and ≤ 80
−1,3
±0,8 ±1,0
+0,8
> 80 and ≤ 110
−1,7
+1,2
> 110 and ≤ 150
−2,0
±1,0 ±1,2
+1,6
> 150
−2,5
a  Overlap zone excluded.
Table 4 — Length tolerance
Dimensions in millimetres
Length Tolerance
≤ 300 ±3
> 300 and ≤ 600 ±4,5
> 600 ±1 %
6.2 Hose end squareness
All the points on the end surface of a hose shall be in the tolerance zone, given in Table 5Table 5,, which is
defined by two planes perpendicular to the longitudinal axis of the hose (see Figure 1Figure 1).).
Table 5 — Hose end squareness
Dimensions in millimetres
I.D. Tolerance zone
< 25,4 2,5
≥ 25,4 10 % of I.D.
ISO/DISFDIS 17324:20252026(en)

Key
1 plane
2 plane
a
Tolerance zone.
Figure 1— — Hose end squareness
7 Physical properties
7.1 Rubber compounds
Physical properties of rubber compounds used for the lining, cover and tubing shall conform to the values
given in Table 6, Table 7, Table 8, Table 9, and Table 10Table 6, Table 7, Table 8, Table 9, and Table 10. Tests
shall be carried ou
...