BS EN ISO 7326:2016
Rubber and plastics hoses. Assessment of ozone resistance under static conditions
| Standard number: | BS EN ISO 7326:2016 |
| Pages: | 20 |
| Released: | 2016-10-31 |
| ISBN: | 978 0 580 89087 1 |
| Status: | Standard |
BS EN ISO 7326:2016
This standard BS EN ISO 7326:2016 Rubber and plastics hoses. Assessment of ozone resistance under static conditions is classified in these ICS categories:
- 23.040.70 Hoses and hose assemblies
This document specifies five methods for determining the ozone resistance of the outer covers of hoses:
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method 1, for bore sizes up to and including 25 mm, carried out on the hose itself;
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method 2, for bore sizes greater than 25 mm, carried out on a test piece from the hose wall;
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method 3, for bore sizes greater than 25 mm, carried out on a test piece from the cover;
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method 4, for all bore sizes, carried out on the hose itself;
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method 5, for all bore sizes, carried out on hoses that are expandable, for example textile-reinforced hoses.
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.