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| Customization: | Available |
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| Material: | NBR |
| Application: | Seal |
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List of O-ring standards | ||||||
Standard | O-ring Cross-sectional Diameter (W) | |||||
AS 568 BS 1516 | 1.78 | 2.62 | 3.53 | 5.33 | 6.99 | |
JISB2401 | 1.9 | 2.4 | 3.1 | 3.5 | 5.7 | 8.4 |
ISO 3601/1 DIN 3771/1 GB 3452.1 | 1.8 | 2.65 | 3.55 | 5.3 | 7 | |
Preferred metric size | 1 | 1.5 | 2 | 2.5 | 3 | |
3.5 | 4 | 4.5 | 5 | 5.5 | ||
6 | 7 | 8 | 10 | 12 | ||
AS 568 (900 series) | 1.02 | 1.42 | 1.63 | 1.83 | 1.98 | |
2.08 | 2.21 | 2.46 | 2.95 | 3 | ||

Performance parameters | ||
Static Seal | Dynamic Seal | |
Working pressure | Up to 20 MPa without a back-up ring; | Up to 5 MPa without a back-up ring; |
Up to 40 MPa with a back-up ring; | Higher pressure with a back-up ring. | |
Up to 200 MPa with a special back-up ring. | ||
Movement speed | The maximum reciprocating speed can reach 0.5 m/s and the maximum rotating speed can reach 2.0 m/s. | |
Temperature | General applications:-30°C~+110°C;special rubber:-60°C~+250°C;rotating applications:-30°C~+80°C | |
Medium | See Raw Material Characteristics of Rubber Seals | |
NBR 70 PHYSICAL TEST REPORT | ||||
Materia: NBR70-20 Standard:ASTM D2000 M2BG710A14B14E014E034EA14EF11EF21 | ||||
Press cure:sheet 170℃ 6min Button:170℃ 8min Post Cure:Sheet 120℃ 2h Button:120℃ 2h | ||||
Test Item | Test Condition | Standards | Test result | |
Test under normal situation | Hardness(Shore-A) | Room temperature | 70±5 | 70 |
Tensile strength(Mpa) | ≥10 | 14 | ||
Elongation (%) | ≥250 | 314 | ||
Density(g/cm3) | / | 1.215 | ||
Aging-Resistanc e Testing | Hardness Change(Shore-A) | 100℃×70 h | ≤+15 | 5 |
Tensile strength Change(%) | ≤-20 | 4 | ||
Elongation Change(%) | ≤−40 | −21.5 | ||
Compression set | Compression set(%) | 100℃×22h | ≤25 | 8.1 |
Oil-Resistance No.1 OIL | Hardness Change(Shore-A) | 100°C × 70 h | ≤-5~+10 | 8 |
Tensile strength Change(%) | ≤-25 | 9 | ||
Elongation Change(%) | ≤-45 | -9.7 | ||
Volume Change(%) | -10~+5 | -9.5 | ||
Oil-Resistance N0.3 OIL | Hardness Change(Shore-A) | 100℃×70 h | -10~+5 | -1 |
Tensile strength Change(%) | ≤-45 | 6.6 | ||
Elongation Change(%) | ≤-45 | -2.3 | ||
Volume Change(%) | 0~+25 | 5.3 | ||
Water Resistance | Hardness Change(Shore-A) | 100℃×70 h | ±10 | -2 |
Volume Change(%) | ±15 | 3.6 | ||
EPDM 70 PHYSICAL TEST REPORT | ||||
Material: EPDM70 Standard:ASTM D2000 M2AA707A13B13 | ||||
Press cure:sheet 170℃ 10min Button:170℃ 15min Post cure:sheet 120℃ 2H Button:120℃ 2H | ||||
Test Item | Test Condition | Standards | Test result | |
Original Properties | Hardness(Shore-A) | 23℃ | 70±5 | 72 |
Tensile strength(MPA) | ≥10 | 13.8 | ||
Elongation (%) | ≥200 | 310 | ||
Density(g/cm3) | / | 1.14 | ||
Aging-Resistanc e Testing | Hardness Change(Shore-A) | 70℃×70 h | ≤+15 | 2 |
Tensile strength Change(%) | ±30 | 1.2 | ||
Elongation Change(%) | ≤−50 | -5.6 | ||
Compression set | Compression set(%) | 70℃×22 h | ≤25 | 16.5 |
Conclusion test:OK | ||||
