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ISO 7326 pdf ozone resistance hose assement standard

Date:Jun 20, 2019

BS EN ISO 7326 standard is for Rubber and plastics hoses with Assessment of ozone

resistance under static conditions.

12_BS_EN_ISO_7326_mounting_hose_method_1

This ISO 7326 document 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.

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