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GN3025‐SPCC
summary: The material is a new sealing material that uniformly coats a rubber layer on the surface of the metal substrate through a specific production process
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summary
The material is a new sealing material, which is uniformly coated with a rubber layer on the surface of the metal substrate through a specific production process; The material has good heat resistance, durability and a very low pressure set. Compared to traditional non-metallic sealing materials, this material has a relatively long service life, so it is often used in environments with higher pressures, higher temperatures and more demanding sealing requirements.
Technical indicators
| project | Indicator requirements | |
| Rubber type | nitrile rubber | |
| Metal substrate | SPCC | |
| appearance | Matte semi-black, smooth | |
| Total thickness(mm) | 0.30±0.02 | |
| Metal substrate Thickness(mm) | 0.25±0.01 | |
| Rubber layer thickness(mm) | 0.025±0.005(Single-sided) | |
| Maximum operating temperature(°C) | ≤150℃ | |
| Rubber adhesion ASTM-D3359 | 100% no shedding | |
| Adhesive layer pull-off strength (Mpa) ASTM-D4151-09 | ≥1.4 | |
| Base hardness (HV) | 120 ~ 160 | |
| 
 Unburned test | Rubber hardness(A) ASTM D-2240 | 70 ~ 80 | 
| Tensile strength (Mpa) ASTM D-412 | ≥8 | |
| Elongation (%) ASTM D-412 | ≥200 | |
| 
 Heat aging 70 hours 100℃ | Change in hardness (%) ASTM D-573 | —15 ~ 15 | 
| Change in tensile strength (%) ASTM D-573 | —30 ~ 30 | |
| IRM903# oil, dipped Oil volume change rate (%) ASTM D-471 | ≤40 | |
Rubber
strength
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