Type | Roll Length / Meter |
230 mm Centre Bulb | 15 |
230 mm Plain Bulb | 15 |
Property | Unit | Requirements |
Unaged : Hardness Tensile strength, min. Elongation at break, min. | IRHD MPa % | 60 ± 5 15 400 |
Ageing : change from unaged values after 7 days in air at 70°C Hardness, max. Tensile strength, max. Elongation at break, max. | IRHD % % | + 10 - 0 ± 20 ± 20 |
Compression set After 22 h at 70°C, max. | % | 30 |
Water absorption : Chang in weight after immersion in distilled water for 18 h at 70°C, max. Ozone resistance, 5% strain, 30°C, 24 h, 10 ± 5 p.p.h.m. ozone, 55 ± 5% r.h. | % | 5 No cracking visible under x 7 magnification |