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About This Item
Full Description
ISO 7326:2016 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 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 ISO 1431-1, using test sheets of the appropriate polymeric compound vulcanized to the same degree.
Document History
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ISO 7326:2016
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Rubber and plastics hoses - Assessment of ozone resistance under static conditions- Most Recent
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ISO 7326:2006
Rubber and plastics hoses - Assessment of ozone resistance under static conditions- Historical Version
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ISO 7326:1991
Rubber and plastics hoses - Assessment of ozone resistance under static conditions- Historical Version