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Technical Index | Natural Rubber (-40℃-60 ℃) | Neoprene Rubber(-25℃-60℃) | ||||
Hardness(IRHD) | 60±5 | 60±5 | ||||
Tensile Strength(MPa) | ≥18 | ≥17 | ||||
Elongation at Break(%) | ≥450 | ≥400 | ||||
Brittleness Temperature(℃) | ≤ -50 | ≤ -40 | ||||
Compression Set(70℃×24h)(%) | ≤ 30 | ≤ 15 | ||||
Ozone Aging Resistance(20% strain,40℃ × 96h) | 25 pphm | 100 pphm | ||||
No Cracks | No Cracks | |||||
Hot Air Aging | Test Condition(℃ × h) | 70 × 168 | 100 × 70 | |||
Max Change in Tensile Strength(%) | - 15 | -15 | ||||
Max Change in Elongation at Break(%) | - 20 | -40 | ||||
Max Change in Hardness(IRHD) | -5 , +10 | 0 , +10 | ||||
Bond Strength Between Elastomer and Steel Plate(KN/m) | >10 | >10 | ||||
Bond Strength Between Elastomer and PTFE(KN/m) | >7 | >7 |
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