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Product description

CENUSIL® R 250 CN is peroxide curing HCR silicone rubber. They are noted for the good   flexibility and high elasticity properties.
The compounds are easily pigmented with pigment pastes and have a good processing characteristic.
The various grades can be blended in any proportion to achieve intermediate hardness

Application

CENUSIL® R 250 CN is designed for press curing application

Storage

The  “Best use before end” date of each batch is shown on the product label.

Storage  beyond  the  date  specified  on  the  label does not necessarily mean that the product is no longer usable. In this case however, the properties required for the intended use must be checked for quality assurance reasons.

Safety notes

Comprehensive instructions are given in the corresponding Material Safety Data Sheets. They are available on request from WACKER subsidiaries.

Product data

Typical general characteristics  

Inspection Method 

Value

Hardness Shore A

DIN 53505 - A

50

Density

DIN EN ISO 1183-1A

1.14g/cm3

Tensile strength

DIN 53504  S1

10 N/mm2

Elongation at break

DIN 53504  S1

500%

Tear strength

ASTM D 624 B

22N/mm

Curing conditions:  15 min / 165 °C in press ; post curing for 4 hours@200oC.

Curing agent: 1.43% of  45% past of 2,5-bis-(t-butylperoxy)-2,5-dimethyl-hexance in silicone rubber.

These figures are only intended as a guide and should not be used in preparing specifications.