No.

Inspection Item

Index

B

S

J

1

Hardness (Shore A, degree)

60±5

60±5

60±5

2

Tensile Strength (MPa)                   ≥

15

12

10

3

Elongation at break (%)                   ≥

380

380

300

4

Compression Permanent Deformation(%)

70°Cx24h                ≤

20

20

20

5

23°Cx168h               ≤

30

25

25

6

Tearing Strength(KN/m)                 ≥

-45

-40

-40

7

Brittleness Temperature(°C)              ≤

35

35

35

Air Aging

70°C x168h 

Hardness Change(Shore A, Degree)                 ≤

+8

+8

-

Tensile Strength (MPa)     ≥

12

10

Tensile Failure Elongation(%)  ≥

300

300

100°C x168h

Hardness Change(Shore A, Degree)                 ≤

-

-

+8

Tensile Strength (MPa)    ≥

9

Tensile Failure Elongation(%)   ≥

250

8

Ozone Aging 50pphm:20%,48h

2

2

2

9

Bonding between Rubber and Metal

Section in Elastic Body