BS EN ISO 7326:2016
Current
The latest, up-to-date edition.
Rubber and plastics hoses. Assessment of ozone resistance under static conditions
Hardcopy , PDF
English
31-10-2016
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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.
| 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 |
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.
| 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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