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BS EN ISO 7326:2016

Current
Current

The latest, up-to-date edition.

Rubber and plastics hoses. Assessment of ozone resistance under static conditions
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

10-31-2016

Publisher

British Standards Institution

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 General considerations
5 Apparatus
6 Test pieces
7 Conditioning of test pieces
8 Test conditions
9 Procedure
10 Test report
Bibliography

Defines 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 textile-reinforced hoses.

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 25mm, carried out on the hose itself; method 2, for bore sizes greater than 25mm, carried out on a test piece from the hose wall; method 3, for bore sizes greater than 25mm, 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 textile-reinforced 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 ISO1431‑1 , using test sheets of the appropriate polymeric compound vulcanized to the same degree.

Committee
PRI/66
DevelopmentNote
Supersedes BS EN 27326. (08/2008) Supersedes 15/30317681 DC. (11/2016)
DocumentType
Standard
Pages
20
PublisherName
British Standards Institution
Status
Current
Supersedes

Standards Relationship
ISO 7326:2016 Identical
EN ISO 7326:2016 Identical

DEFSTAN 47-32/2(2011) : 2011 RUBBER HOSE AND HOSE ASSEMBLIES FOR FLUID POWER SYSTEMS
DEFSTAN 22-94/3(2011) : 2011 SPECIFICATION FOR THE REPLENISHMENT AT SEA HOSES AND HOSE ASSEMBLIES
DEFSTAN 47-032/3(2017) : 2017 RUBBER HOSE AND HOSE ASSEMBLIES FOR FLUID POWER SYSTEMS
DEFSTAN 02-345/2(2013) : 2013 REQUIREMENTS FOR FLEXIBLE RUBBER PIPE ASSEMBLIES AND BELLOWS FOR USE IN SYSTEMS FROM VACUUM TO 20 BAR

ISO 23529:2016 Rubber General procedures for preparing and conditioning test pieces for physical test methods
ISO 8330:2007 Rubber and plastics hoses and hose assemblies Vocabulary
ISO 1431-1:2012 Rubber, vulcanized or thermoplastic Resistance to ozone cracking Part 1: Static and dynamic strain testing

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Hardcopy - English
PDF - English
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