|
No.
|
Item
|
Index
|
|||
|
B
|
|||||
|
1
|
Hardness (shore A)
|
60 ± 5
|
|||
|
2
|
Tensile strength, MPa ≥
|
15
|
|||
|
3
|
Elongation of break, % ≥
|
380
|
|||
|
4
|
Compression set
|
70ºC×24 h,% ≤
|
35
|
||
|
23ºC×168 h, % ≤
|
20
|
||||
|
5
|
Tear strength 21, kN/m ≥
|
30
|
|||
|
6
|
Brittleness, ºC ≤
|
-45
|
|||
|
7
|
Hot
air aging |
70ºC×168 h
|
Hardness (shore A), ≤
|
+8
|
|
|
Tensile strength, MPa ≥
|
12
|
||||
|
Elongation of break, % ≥
|
300
|
||||
|
100ºC×168 h
|
Hardness (shore A), ≤
|
--
|
|||
|
Tensile strength, MPa ≥
|
|||||
|
Elongation of break, % ≥
|
|||||
|
8
|
Ozone testing 50 PHM: 20%, 48 h
|
2 grade
|
|||