| After-sales Service: | 10 Years |
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| Warranty: | 1 Years |
| Type: | Building Sealing Material |
| Samples: |
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| Customization: |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Suppliers with verified business licenses
Audited Supplier Features
| Physical properties | Test methods | Minimum value |
| Water absorption | ASTM D-570 | 15% - 20% |
| Tear resistance | ASTM D-624 | 300 psi |
| Specific gravity | ASTM D-792 | 1.38 ± 0.05 |
| Hardness shore A15 | ASTM D-2240 | 79 ± 3 |
| Tensile strength | ASTM D-638 Type IV | 2000 psi |
| Ultimate elongation | ASTM D-638 Type IV | 360% |
| 100% modulus | ASTM D-638 Type IV | 725 psi |
| Low temperature brittleness (Tb) °F (°C) | ASTM D-746 | -35 (-37) passed |
| Stiffness in Flexure | ASTM D-747 | 600 psi |
| Ozone Resistance | ASTM D-1149 | No Failure |
| Accelerated Extraction, CRD-572 | ||
| Tensile | CDR - C- 572 | 1850 psi |
| Elongation | CDR - C- 572 | 350% |
| Effect of Alkali, CRD-572 | ||
| Weight Change | CRD-572 | 0.0015 |
| Change in Hardness Shore A | ASTM D-2240 | ± 5 points |
| No. | Item | Unit | Parameter |
| 1 | Hardness | Shore | >65 |
| 2 | Tensile strength | Mpa | ≥12 |
| 3 | Elogation | % | ≥300 |
| 4 | Tensile modulus | Mpa | ≥5.5 |
| 5 | Brittleness temperature | °C | <-38 |
| 6 | Bibulous rate | % | <0.5 |
| 7 | Air aging (70±1 °C, 240 hours) | % | ≥95 |
| 8 | Alkali effect coefficient (20% alkali liquor, NaOH or KON) | ≥95 |
Suppliers with verified business licenses
Audited Supplier 
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