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No. | Items | Index | ||||
Type I | Type II | |||||
S7774 | S6674 | S6474 | S6574 | SG6574 | ||
1 | Hardness, IRHD/Shore A | 70±5 | 60±5 | 60±5 | 60±5 | 60±5 |
2 | Tensile Strength, Mpa,≥ | 22 | 18 | 18 | 14 | 14 |
3 | Elongation at break,%,≥ | 400 | 450 | 450 | 400 | 400 |
4 | Compression set(70℃×22h),%,≤ | 40 | 40 | 40 | 40 | 40 |
5 | Bonding strength, Kn/m,≥ | 6 | 6 | 6 | 6 | 6 |
6 | Distilled water rate(70℃×96h)%,≤ | 5 | 5 | 5 | 5 | 5 |
7 | Brittleness temperature,℃,≤ | -40 | -40 | -40 | -30 | -50 |
8 | Density, Mg/m3 | 1.1-1.3 | 1.0-1.2 | 1.1-1.3 | 1.2-1.5 | 1.0-1.3 |
9 | Compression modulus,Mpa,20% Compression modulus,Mpa,30% Compression modulus,Mpa,40% | 5.8-8.0 5.6-8.0 6.0-9.0 | 5.5-6.0 5.6-6.0 6.2-6.8 | 5.5-6.0 5.6-6.0 6.2-6.8 | 5.5-6.0 5.6-6.0 6.2-6.8 | 5.5-6.0 5.6-6.0 6.2-6.8 |
10 | Set the stretching stress,Mpa,100% Set the stretching stress,Mpa,200% | 2.0-4.0 2.5-5.0 | 1.6-2.0 1.8-4.5 | 1.6-2.0 1.8-4.5 | 1.6-2.0 1.8-4.5 | 1.6-2.0 1.8-4.5 |
Note: 1. Pure rubber seals don’t need testing No.5 Technical. 2.Above test items are on base of sample testing. | ||||||











