EN ISO 8308:2015

Rubber and plastics hoses and tubing - Determination of transmission of liquids through hose and tubing walls (ISO 8308:2015)

ISO 8308:2015 specifies two methods for the determination of transmission of liquids through hose and tubing walls. Both methods are applicable to rubber and plastics hose and tubing, and comprise:
-      method A, for all hose and tubing sizes and constructions: a practical comparative test, simulating working conditions;
-      method B, for hose and tubing up to 16 mm inside diameter.

Gummi- und Kunststoffschläuche mit und ohne Einlagen - Bestimmung der Durchlässigkeit von Schlauchwandungen gegenüber Flüssigkeiten (ISO 8308:2015)

Diese Internationale Norm legt zwei Verfahren zur Bestimmung der Durchlässigkeit von Schlauchwandungen von Schläuchen mit und ohne Einlagen gegenüber Flüssigkeiten fest. Beide Verfahren sind für Schläuche aus Gummi und aus Kunststoff mit und ohne Einlagen anwendbar und umfassen:
   Verfahren A, für alle Größen und Bauweisen von Schläuchen mit und ohne Einlagen: es handelt sich um eine praktische Vergleichsprüfung, bei der die Betriebsbedingungen simuliert werden.
   Verfahren B, für Schläuche mit und ohne Einlagen mit einem Innendurchmesser bis 16 mm.

Tuyaux et tubes en caoutchouc et en plastique - Détermination de la transmission des liquides à travers les parois des tuyaux et des tubes (ISO 8308:2015)

ISO 8308:2015 spécifie deux méthodes pour la détermination de la transmission des liquides à travers la paroi des tuyaux et des tubes. Les deux méthodes sont applicables aux tuyaux et aux tubes en caoutchouc et en plastique, et comprennent:
-      méthode A, pour toutes les dimensions et constructions de tuyau: un essai comparatif pratique, reproduisant les conditions de fonctionnement;
-      méthode B, pour les tuyaux et tubes jusqu'à 16 mm de diamètre intérieur.

Gumene in polimerne cevi ter cevovodi - Ugotavljanje prenosa tekočin skozi stene cevi in stene cevovodov (ISO 8308:2015)

Ta mednarodni standard določa dve metodi za ugotavljanje prenosa tekočin skozi stene cevi in stene cevovodov. Obe metodi se uporabljata za gumene in polimerne cevi in cevovode ter zajemata:
– metoda A, za vse velikosti in konstrukcije cevi in cevovodov: praktičen primerjalni preskus s posnemanjem delovnih pogojev;
– metoda B, za cevi in cevovode z notranjim premerom do 16 mm.

General Information

• Status: Published
• Publication Date: 13-Oct-2015
• Withdrawal Date: 13-Apr-2016
• 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 4 - Basic specifications and test methods for rubber and plastics hoses, hose assemblies and tubing
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 14-Oct-2015
• Completion Date: 14-Oct-2015
• Ref Project: SIST EN ISO 8308:2016 - Rubber and plastics hoses and tubing - Determination of transmission of liquids through hose and tubing walls (ISO 8308:2015)

Relations

• Replaces: EN ISO 8308:2008 - Rubber and plastics hoses and tubing - Determination of transmission of liquids through hose and tubing walls (ISO 8308:2006)
• Effective Date: 08-Jun-2022

Overview

EN ISO 8308:2015 (ISO 8308:2015) - "Rubber and plastics hoses and tubing - Determination of transmission of liquids through hose and tubing walls" - specifies laboratory methods to measure how liquids are transmitted (by permeation and evaporation) through hose and tubing walls. The standard defines two test methods: Method A, a comparative, pressure-based test that simulates working conditions for all hose/tubing sizes; and Method B, a gravimetric, pressureless test for hose and tubing up to 16 mm inside diameter.

Key topics and requirements

• Two test methods
  • Method A: Uses a pressurised apparatus (nitrogen source, regulator, safety valve) where test pieces (e.g., a hose assembly with 250 mm free length or tubing samples) are charged with test liquid. Measurements are taken at 24 h intervals until a steady-state evaporation rate is reached. Test pressure: 50 kPa ± 5 kPa (gauge). Result expressed as steady-state evaporation in mL per m² per hour.
  • Method B: A pressureless reservoir is partly filled and attached to a length of hose/tubing (other end plugged). Assembly is weighed initially and daily for eight days. The result is the maximum mass loss in any 24 h period per unit inside surface area. The method accounts for permeation and evaporation and reduces selective permeation by daily agitation.
• Test pieces and sampling: Three test pieces required for Method A; defined internal free length and inside diameter measured per referenced standards.
• Test conditions: Standard test temperatures are (23 ± 2) °C or (27 ± 2) °C (ISO 23529). Test liquid is specified by the relevant product standard.
• Safety: Method A warns about hazardous vapours - tests must be performed in well-ventilated areas and apparatus must include safety provisions (safety valve, shield).
• Reporting: Test report must identify the hose/tubing, reference the standard, specify method used, test liquid, conditions and results.

Applications

• Assessing permeation and evaporation performance of rubber and plastic hoses and tubing used for fuels, solvents, hydraulic fluids, chemicals and other liquids.
• Comparative material and construction testing during product development and material selection.
• Quality control and type testing for manufacturers and test laboratories.
• Supplying objective permeability data for procurement specifications, regulatory compliance and safety assessments.

Who uses this standard

• Hose and tubing manufacturers
• Independent test laboratories and certified quality-control facilities
• R&D and materials engineers evaluating barrier performance
• Purchasing and compliance teams specifying hose performance
• Standards bodies and regulatory authorities

Related standards

• ISO 4671 - measurement of hose dimensions and lengths
• ISO 4788 - graduated measuring cylinders (laboratory glassware)
• ISO 23529 - specimen preparation and conditioning for rubber tests

Keywords: EN ISO 8308:2015, ISO 8308:2015, rubber and plastics hoses, tubing, transmission of liquids, permeation, evaporation, method A, method B, hose testing, permeability.

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2016
1DGRPHãþD
SIST EN ISO 8308:2009
*XPHQHLQSROLPHUQHFHYLWHUFHYRYRGL8JRWDYOMDQMHSUHQRVDWHNRþLQVNR]LVWHQH
FHYLLQVWHQHFHYRYRGRY,62
Rubber and plastics hoses and tubing - Determination of transmission of liquids through
hose and tubing walls (ISO 8308:2015)
Gummi- und Kunststoffschläuche mit und ohne Einlagen - Bestimmung der
Durchlässigkeit von Schlauchwandungen gegenüber Flüssigkeiten (ISO 8308:2015)
Tuyaux et tubes en caoutchouc et en plastique - Détermination de la transmission des
liquides à travers les parois des tuyaux et des tubes (ISO 8308:2015)
Ta slovenski standard je istoveten z: EN ISO 8308:2015
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 8308
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2015
EUROPÄISCHE NORM
ICS 23.040.70 Supersedes EN ISO 8308:2008
English Version
Rubber and plastics hoses and tubing - Determination of
transmission of liquids through hose and tubing walls (ISO
8308:2015)
Tuyaux et tubes en caoutchouc et en plastique - Gummi- und Kunststoffschläuche mit und ohne
Détermination de la transmission des liquides à travers Einlagen - Bestimmung der Durchlässigkeit von
les parois des tuyaux et des tubes (ISO 8308:2015) Schlauchwandungen gegenüber Flüssigkeiten (ISO
8308:2015)
This European Standard was approved by CEN on 29 August 2015.

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
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 8308:2015 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 8308:2015) 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 2016, and conflicting national standards shall be
withdrawn at the latest by April 2016.
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 8308:2008.
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 8308:2015 has been approved by CEN as EN ISO 8308:2015 without any modification.
INTERNATIONAL ISO
STANDARD 8308
Fourth edition
2015-10-01
Rubber and plastics hoses and
tubing — Determination of
transmission of liquids through hose
and tubing walls
Tuyaux et tubes en caoutchouc et en plastique — Détermination de la
transmission des liquides à travers les parois des tuyaux et des tubes
Reference number
ISO 8308:2015(E)
©
ISO 2015
ISO 8308:2015(E)
© ISO 2015, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
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ii © ISO 2015 – All rights reserved

ISO 8308:2015(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Principle . 1
3.1 Method A . 1
3.2 Method B . 1
4 Test liquid . 1
5 Method A . 2
5.1 Apparatus . 2
5.2 Test pieces . 2
5.3 Test temperature . 3
5.4 Test pressure. 3
5.5 Procedure . 3
5.6 Expression of results . 3
5.7 Test report . 4
6 Method B . 4
6.1 Apparatus . 4
6.2 Test piece . 5
6.3 Test temperature . 5
6.4 Procedure . 5
6.5 Expression of results . 6
6.6 Test report . 7
ISO 8308:2015(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
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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, Part 2 (see www.iso.org/directives).
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