SIST EN ISO 7326:2016

Rubber and plastics hoses - Assessment of ozone resistance under static conditions (ISO 7326:2016)

This document specifies five methods for determining the ozone resistance of the outer covers of hoses:
— method 1, for bore sizes up to and including 25 mm, carried out on the hose itself;
— method 2, for bore sizes greater than 25 mm, carried out on a test piece from the hose wall;
— method 3, for bore sizes greater than 25 mm, carried out on a test piece from the cover;
— method 4, for all bore sizes, carried out on the hose itself;
— method 5, for all bore sizes, carried out on hoses that are expandable, for example textilereinforced
hoses.
NOTE For hoses with built-in fittings from which it is not possible to take test pieces, the ozone resistance
can be assessed on slabs in accordance with ISO 1431-1, using test sheets of the appropriate polymeric compound
vulcanized to the same degree.

Gummi- und Kunststoffschläuche - Bestimmung der Ozonbeständigkeit unter statischen Bedingungen (ISO 7326:2016)

Tuyaux en caoutchouc et en plastique - Évaluation de la résistance à l'ozone dans des conditions statiques (ISO 7326:2016)

ISO 7326:2016 spécifie cinq méthodes pour la détermination de la résistance à l'ozone des revêtements extérieurs des tuyaux:
-      méthode 1, pour des dimensions d'alésage inférieures ou égales à 25 mm, réalisée sur le tuyau lui-même;
-      méthode 2, pour des dimensions d'alésage supérieures à 25 mm, réalisée sur une éprouvette prélevée dans la paroi du tuyau;
-      méthode 3, pour des dimensions d'alésage supérieures à 25 mm, réalisée sur une éprouvette prélevée dans le revêtement du tuyau;
-      méthode 4, pour toutes les dimensions d'alésage, réalisée sur le tuyau lui-même;
-      méthode 5, pour toutes les dimensions d'alésage, réalisée sur des tuyaux qui sont extensibles, par exemple des tuyaux renforcés textile.
NOTE          Pour des tuyaux ayant des raccords intégrés sur lesquels il n'est pas possible de prélever des éprouvettes, la résistance à l'ozone peut être évaluée sur des plaques conformément à l'ISO 1431‑1, en utilisant des plaques du mélange polymérique approprié, vulcanisées au même degré.

Gumene in polimerne cevi - Ocena odpornosti proti ozonu pri statičnih pogojih (ISO 7326:2016)

Ta dokument določa pet metod za ugotavljanje odpornosti proti ozonu zunanjih pokrovov cevi:
– metoda 1 za nominalne premere največ 25 mm, ki se izvaja na sami cevi;
– metoda 2 za nominalne premere več kot 25 mm, ki se izvaja na preskusnih kosih iz stene cevi;
– metoda 3 za nominalne premere več kot 25 mm, ki se izvaja na preskusnih kosih iz pokrova;
– metoda 4 za vse velikosti premerov, ki se izvaja na sami cevi;
– metoda 5 za vse velikosti premerov, ki se izvaja na razširljivih ceveh, na primer s tekstilom ojačenih
ceveh.
OPOMBA: Pri ceveh z vgrajenimi fitingi, pri katerih ni mogoče odvzeti preskusnega kosa, se lahko odpornost proti ozonu oceni na ploščah v skladu s standardom ISO 1431-1, ko se uporabijo preskusne plošče iz ustrezne polimerne zmesi, vulkanizirane na enako stopnjo.

General Information

• Status: Published
• Public Enquiry End Date: 09-Jul-2015
• Publication Date: 07-Nov-2016
• ICS: 23.040.70 - Hoses and hose assemblies
• Technical Committee: IPMA - Polimer materials and products
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 03-Nov-2016
• Due Date: 08-Jan-2017
• Completion Date: 08-Nov-2016
• Ref Project: EN ISO 7326:2016 - Rubber and plastics hoses - Assessment of ozone resistance under static conditions (ISO 7326:2016)

Relations

• Revised: SIST EN ISO 7326:2008 - Rubber and plastics hoses - Assessment of ozone resistance under static conditions (ISO 7326:2006)
• Effective Date: 01-Jun-2015
• Replaces: SIST EN ISO 7326:2008 - Rubber and plastics hoses - Assessment of ozone resistance under static conditions (ISO 7326:2006)
• Effective Date: 02-Nov-2016
• Replaces: SIST EN ISO 7326:2008 - Rubber and plastics hoses - Assessment of ozone resistance under static conditions (ISO 7326:2006)
• Effective Date: 08-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 7326:2016
01-december-2016
1DGRPHãþD
SIST EN ISO 7326:2008
*XPHQHLQSROLPHUQHFHYL2FHQDRGSRUQRVWLSURWLR]RQXSULVWDWLþQLKSRJRMLK
,62
Rubber and plastics hoses - Assessment of ozone resistance under static conditions
(ISO 7326:2016)
Gummi- und Kunststoffschläuche - Bestimmung der Ozonbeständigkeit unter statischen
Bedingungen (ISO 7326:2016)
Tuyaux en caoutchouc et en plastique - Évaluation de la résistance à l'ozone dans des
conditions statiques (ISO 7326:2016)
Ta slovenski standard je istoveten z: EN ISO 7326:2016
ICS:
23.040.70 Gumene cevi in armature Hoses and hose assemblies
SIST EN ISO 7326:2016 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 7326:2016

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SIST EN ISO 7326:2016


EN ISO 7326
EUROPEAN STANDARD

NORME EUROPÉENNE

October 2016
EUROPÄISCHE NORM
ICS 23.040.70 Supersedes EN ISO 7326:2008
English Version

Rubber and plastics hoses - Assessment of ozone
resistance under static conditions (ISO 7326:2016)
Tuyaux en caoutchouc et en plastique - Évaluation de la Gummi- und Kunststoffschläuche - Bestimmung der
résistance à l'ozone dans des conditions statiques (ISO Ozonbeständigkeit unter statischen Bedingungen (ISO
7326:2016) 7326:2016)
This European Standard was approved by CEN on 9 October 2016.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 7326:2016 E
worldwide for CEN national Members.

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SIST EN ISO 7326:2016
EN ISO 7326:2016 (E)
Contents Page
European foreword . 3

2

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SIST EN ISO 7326:2016
EN ISO 7326:2016 (E)
European foreword
This document (EN ISO 7326:2016) 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 April 2017, and conflicting national standards shall be
withdrawn at the latest by April 2017.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
This document supersedes EN ISO 7326:2008.
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, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 7326:2016 has been approved by CEN as EN ISO 7326:2016 without any modification.
3

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SIST EN ISO 7326:2016

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SIST EN ISO 7326:2016
INTERNATIONAL ISO
STANDARD 7326
Fourth edition
2016-10-15
Rubber and plastics hoses —
Assessment of ozone resistance under
static conditions
Tuyaux en caoutchouc et en plastique — Évaluation de la résistance à
l’ozone dans des conditions statiques
Reference number
ISO 7326:2016(E)
©
ISO 2016

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SIST EN ISO 7326:2016
ISO 7326:2016(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2016, Published in Switzerland
All rights reserved. Unless otherwise specified, 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
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. [phone]
Fax [phone]
[e-mail]
www.iso.org
ii © ISO 2016 – All rights reserved

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SIST EN ISO 7326:2016
ISO 7326:2016(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General considerations . 1
5 Apparatus . 2
6 Test pieces . 2
6.1 Type of test piece . 2
6.1.1 Method 1 . 2
6.1.2 Method 2 . 2
6.1.3 Method 3 . 2
6.1.4 Method 4 . 3
6.1.5 Method 5 . 3
6.2 Number of test pieces . 3
7 Conditioning of test pieces . 3
8 Test conditions . 3
9 Procedure. 3
9.1 Method 1. 3
9.2 Method 2. 4
9.3 Method 3. 4
9.4 Method 4. 5
9.5 Method 5. 6
10 Test report . 7
Bibliography . 8
© ISO 2016 – All rights reserved iii

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SIST EN ISO 7326:2016
ISO 7326:2016(E)

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 documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives,
...