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General molded rubber

Common grade fumed rubber for molding has good physical properties, yellowing resistance and good processability. They are applicable to general molded products with requirement for high transparency. Such as: sanitary products and industrial miscellaneous parts such as O-rings and sealing gaskets.

  

       Typical Properties:

Category

Item

General molded

MY D9530

MY D9540

MY D9550

MY D9560

MY D9570

MY D9580

MY D9590

Appearance

Transparent

Vulcanization

Hardness Shore A

30±2

40±2

50±2

60±2

70±2

80±2

86±2

Tensile strength MPa

8.0

8.5

8.5

8.5

8.5

8.0

8.0

Elongation at break %

600

500

400

400

300

200

120

Breaking set %

8

8

8

8

8

8

6

Tear strength B KN/m

15

20

25

25

25

20

10

Post-curing

Hardness Shore A

35±2

45±2

56±2

66±2

74±2

84±2

90±2

Tensile strength MPa

6.5

7.0

8.0

8.0

8.0

7.0

5.0

Elongation at break %

500

400

300

300

200

150

80

Tear strength B KN/m

10

16

18

18

18

16

8

Specific density 25°C g/cm³

1.07±0.04

1.13±0.04

1.15±0.04

1.18±0.04

1.22±0.04

1.25±0.04

1.23±0.05

Compression set 180*22h %

55

50

50

45

45

40

35

Resilience %

55

55

50

45

40

40

35

Dielectric strength  kV/mm

20

20

20

20

20

20

20

Volume resistivity Ω.cm

1.0 x 10¹⁵

1.0 x 10¹⁵

1.0 x 10¹⁵

1.0 x 10¹⁵

1.0 x 10¹⁵

1.0 x 10¹⁵

1.0 x 10¹⁵

Physical data in the above table is for reference only.

Vulcanization condition: 175℃× 5Min. Post-curing condition: 200℃ x 4h

 Addition of curing agent: liquid 2,5-Dimethyl-2,5-di(tert-butylperoxy)hexane: 0.65%.

 

Advantage:

- Flexible processability

- Flexible comprehensive physical properties

- Good yellowing resistance

 

Applications:

- Applicable to molded products with requirement for high transparency, such as sanitary products, O-rings.

 

Packing & Storage:

- 20kg/ carton lined with plastic bags or sheets.

- The products have a shelf life of 9 months from date of manufacture depending on the shore hardness if stored at room temperature in the originally sealed container. 

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