Fundamental general methods: GB/T 7762-2014 (static), GB/T 13642-2015 (dynamic), ISO 1431-1:2024, and ASTM D1149, GB/T 35804 is the method for calibrating ozone concentration within the test chamber.
1. Automotive Industry (Largest Volume of Usage)
Specimens: Door weatherstripping, sunroof seals, wiper blades, engine hoses, brake hoses, dust boots, vibration-damping bushings, tire sidewalls, water hoses, fuel hoses.
Standards:
- GB/T 7762-2014: Static testing (seals, tire sidewalls)
- GB/T 13642-2015: Dynamic testing (dust boots, rubber components subject to reciprocating motion)
- ISO 1431-1:2024
- ISO 7326: Static ozone resistance for rubber hoses
- ISO 10960: Dynamic ozone resistance for rubber hoses
- ASTM D1149 (commonly used by Western OEMs)
- OEM-specific standards: Material specifications from manufacturers such as GM (GMW), Ford, Volkswagen, etc.
Typical Test Conditions: 40°C, 50 pphm ozone concentration, 20% elongation; brake hoses often require 100 pphm.
2. Wire and Cable Industry
Specimens: Rubber-sheathed cables, charging station cables, outdoor elastomer sheathing, insulation layers.
Standards:
- GB/T 2951.21-2008 (Primary standard for ozone resistance in cables)
- ISO 1431-1
- ASTM D1149
Typical Test Conditions: 40°C, 200 pphm ozone concentration, 20% elongation, 24 hours with no visible cracking.
3. Hydraulic/Pneumatic Rubber Hoses and Industrial Hoses
Specimens: Air hoses, water hoses, oil hoses, high-pressure hose assemblies.
Standards:
- ISO 7326:2016: Static ozone resistance for rubber and plastic hoses
- ISO 10960:2017: Dynamic ozone resistance for rubber and plastic hoses
- GB/T 7762, GB/T 13642
- ASTM D1149
4. General-purpose seals, O-rings, gaskets, and rubber profiles
Specimens: Equipment seals, flange gaskets, curtain wall rubber strips, pipe seals, and seals for construction machinery
Standards:
- GB/T 7762-2014 (primarily static)
- ISO 1431-1
- ASTM D1149
- JIS K 6259 (Japanese Industrial Standard)
5. Tires, drive belts, rubber rollers, and conveyor belts
Specimens: Tire sidewalls, V-belts, synchronous belts, conveyor belts, and rubber rollers
Standards:
- GB/T 7762 / GB/T 13642
- ISO 1431-1
- ASTM D1149
Drive belts often require dynamic ozone testing.
6. Outdoor components for photovoltaics (PV) and new energy
Specimens: Junction box seals, PV sealing strips, rubber cushioning pads, and outdoor elastic seals
Standards:
- GB/T 7762
- ISO 1431-1
- ASTM D1149
Often combined with xenon-arc lamp aging tests for comprehensive weather resistance verification.
7. Coated fabrics, tarpaulins, and inflatable products
Specimens: Inflatable boats, waterproof tarpaulins, membrane materials, and rubber-coated fabrics
Standards:
- GB/T 7762
- ISO 1431-1
8. Aerospace and specialty rubber products
Specimens: Aerospace seals, diaphragms, and oil-resistant fluororubber components
Standards:
- ISO 1431-1
- ASTM D1149
Subject to aerospace material specifications, which often mandate more stringent concentration and temperature conditions.
9. Construction and building materials
Specimens: EPDM sealing strips for doors and windows, and rubber strips for curtain walls
Standards:
- GB/T 7762
- ISO 1431-1
