ISO 7326:2016 PDF

Scope: 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 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 textilereinforced 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.

ISO 7326:2016 Referenced Document

ISO 1431-1:2012 Rubber, vulcanized or thermoplastic - Resistance to ozone cracking - Part 1: Static and dynamic strain testing
ISO 23529:2010 Rubber - General procedures for preparing and conditioning test pieces for physical test methods
ISO 8330:2014 Rubber and plastics hoses and hose assemblies - Vocabulary

2016 ISO 7326:2016 Rubber and plastics hoses - Assessment of ozone resistance under static conditions
2006 ISO 7326:2006 Rubber and plastics hoses - Assessment of ozone resistance under static conditions
1991 ISO 7326:1991 Rubber and plastics hoses; assessment of ozone resistance under static conditions
1984 ISO 7326:1984 Rubber and plastics hoses — Assessment of ozone resistance under static conditions