Cork Gasket
Sealing material is compounded with Nitrite (NBR)rubber.This product is suitable for most transformer oils at application
Date sheet
| Serial
number |
Test project |
Index |
The test results |
| 1 | Hardness (Shore) | 80±10 | 82 |
| 2 | Tensile strong No less than (MPA0 | 2.5 | 5 |
|
3 |
Permanent compression deformation
Compression ratio25% 70℃×22h Not more than % |
55 |
38 |
|
4 |
Aging in hot air (100℃×70h) The hardness change
Weight change % |
0~+10 -10~0 |
4 -2.8 |
|
5 |
water-tolerant (100℃×1h )
Volume change % |
-10~+15 |
1.8 |
|
6 |
Resistance to 1# standard oil( 70℃×22h) The hardness change
Volume change % |
-10~+10 0~+10 |
2 3.2 |
|
7 |
Volatile oil standard B (23℃×24h)
The hardness change Volume change % |
20~0 0~60 |
-10 30 |
| 8 | Temperature index | -20℃to 120℃ |
