Type

CH-7140

CH-7150

CH-7160

CH-7170

appearance

Light yellow, red gross rubber

density

1.13±0.05

1.15±0.05

1.19±0.05

1.22±0.05

hardness

40±3

50±3

60±3

70±3

Tensile strength

6.0

7.5

7.0

6.5

Tearing extensibilty

400

350

280

200

Tearing permanent set

6

6

7

7

Racking strength

18

20

20

20