Royflexa Rubber
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Sealing material is compounded with Nitrile (NBR) rubber. This product is suitable for most transformer oils at application.
| Serial No. | Test Project | Index | Test Results |
|---|---|---|---|
| 1 | Hardness (Shore) | 80±10 | 82 |
| 2 | Tensile Strength (MPa) | No less than 2.5 | 5 |
| 3 | Permanent Compression Deformation (70ºC×22h, 25%) | Not more than 55% | 38% |
| 4 | Aging in Hot Air (100ºC×70h) - Hardness / Weight Change | 0~+10 / -10~0% | 4 / -2.8% |
| 5 | Water-tolerant (100ºC×1h) - Volume Change | -10~+15% | 1.8% |
| 6 | Resistance to 1# Standard Oil (70ºC×22h) - Hardness / Volume Change | -10~+10 / 0~+10% | 2 / 3.2% |
| 7 | Volatile Oil Standard B (23ºC×24h) - Hardness / Volume Change | 20~0 / 0~60% | -10 / 30% |
| 8 | Temperature Index | -20ºC to 120ºC | Qualified |
