Overview
SIST EN ISO 10960:2018 specifies a standardized test method for assessing the resistance of rubber and plastics hoses to the damaging effects of atmospheric ozone under dynamic (flexing) conditions. This standard applies to hoses with bore diameters up to and including 25 mm, covering a wide range of industrial, automotive, and general-purpose hoses.
Ozone resistance is vital for hoses exposed to outdoor or industrial environments where ozone in the atmosphere can cause degradation. This international standard, identical to ISO 10960:2017, ensures that manufacturers and users can reliably evaluate the durability of hoses when subjected to repeated movement and ozone exposure.
Key Topics
- Ozone Degradation in Hoses: Ozone is a reactive gas that can cause cracking and deterioration of elastomeric materials, shortening hose service life.
- Dynamic Testing Method: The standard describes a dynamic test procedure-flexing hoses while exposing them to controlled ozone concentrations-to simulate real-world stresses.
- Applicability: Targets hoses with bore diameters ≤ 25 mm, which are commonly used in various applications where flexibility and resistance to ozone are needed.
- Test Apparatus & Conditions:
- Use of a specialized ozone cabinet capable of maintaining specified ozone concentration and temperature.
- Hose specimens are flexed at a controlled frequency, simulating operational movement.
- Specimens are examined periodically for cracking using magnification.
- Reporting Requirements: Test reports must include full identification of the hose, test conditions, details of any cracking, and other key observations.
Applications
ISO 10960:2017 is widely adopted across industries where hose durability against weathering is critical:
- Automotive Sector: Air, fuel, and hydraulic hoses exposed to engine bay ozone and temperature fluctuations.
- Industrial Manufacturing: Hoses in machinery and robotics that require repetitive movement while in potentially aggressive atmospheres.
- Outdoor Installations: Hoses for gardening, irrigation, or equipment that remain outdoors and are vulnerable to ozone degradation.
- General Engineering: Any flexible hose application where long-term performance and safety are required.
Adherence to this standard helps manufacturers improve product quality, ensures reliable performance for end-users, and supports compliance with procurement and regulatory requirements.
Related Standards
For a holistic approach to hose durability and testing, consider the following related standards:
- ISO 1431-1: Rubber, vulcanized or thermoplastic - Resistance to ozone cracking, static and dynamic strain testing.
- ISO 8330: Rubber and plastics hoses and hose assemblies - Vocabulary.
- ISO 23529: Rubber - General procedures for preparing and conditioning test pieces for physical test methods.
These standards, referenced in SIST EN ISO 10960:2018, provide additional guidance on terminology, specimen preparation, and related test methodologies, ensuring harmonized and comparable results across industrial sectors.
Keywords: ozone resistance, rubber hoses, plastics hoses, dynamic test, industrial hose standards, ISO 10960, hose durability, atmospheric ozone, flexing test, standard test methods, hose degradation, testing procedures.
