High physical properties, good abrasion-resistance, good twist
Good ability of sealing
Low content of extract
Good torsion at low temperature
Transparent kind is available
The color,degree of transparency and hardness can be adjusted according to customers` requirements.
Test method
Test conditions
P-50 Half green -rubber
P-60 Green - rubber
P-70 Half -transparent
P-70 Transparent
Hardness (shore A)
ASTM-D785
Room temperature25
25-90
25-90
25-90
25-90
Specific gravity(g/cm3)
ASTM-D792
Room temperature25
0.8-0.95
0.8-0.95
0.8-0.95
0.8-0.95
Tear resistance(kg/cm)
ASTM-D624
Room temperature25
15-45
20-50
25-60
25-60
Tensile strength(kg/cm2)
ASTM-D2209
Room temperature25
20-50
20-55
30-80
30-90
Breaking elongation(%)
ASTM-D638
Room temperature25
400-600
400-600
400-800
400-800
Yellowing resistance (grade)
ASTM-D1143
Room temperature25
-
-
4-4.5
4-4.5
NBS Abrasion-resistance(%)
ASTM-D1630
Room temperature25
>45
>45
>45
>45
Remarks; All the physical properties are got from present standard and test machine, just for reference
(Just for reference, according to practical situations)
Temperature of injection: 170-200Temperature of mold: Above 30Time of injection: 20-40 seconds Speed of injection: Middle speed Pressure of injection: Middle pressure
