Product Description

Shin-Etsu’s SES22257/CAT22257-50 is a 10:1 mix ratio, high tear strength, high modulus, addition cure mold making silicone material.

The SES22257/CAT22257-50 exhibits excellent “knotty” tear, low to no shrinkage, easy release from most casting resins, and exceptional mold life when used in urethane casting resin applications.

Product Features

  • High tear strength
  • Low shrinkage
  • Easy release
  • High urethane casting resin resistance

Typical Properties

Mix Ratio by weight
Cure Conditions
24 hours @ 23C
Snap Time (min)
Working Time
Shore A Hardness
Tensile Strength (MPa)
Tear Strength (kN/m)
% Elongation
Standing Viscosity (SES/CAT) (BH7@20 cP)
Mixed Viscosity (Comb) (BH7@20 cP)
Modulus @ 100%
Specific Gravity (SES/CAT)
Specific Gravity (Comb)

Note: Values are not for specification purposes.

Warranty- The information and data contained herein are believed to be accurate and reliable; however it is the user's responsibility to determine suitability of use. Since Shin-Etsu Silicones, Inc. cannot know all of the uses to which its products may be put or the conditions of use, it makes no warranties concerning the fitness or suitability of its products for a particular use or purpose. You should thoroughly test any proposed use of our products and independently conclude satisfactory performance in your application. Likewise, if the manner in which our products are used requires governmental approval or clearance, you must obtain it. Shin-Etsu Silicones, Inc. warrants only that its products will meet its specifications. There is no warranty of merchantability of fitness of use, nor any other expressed or implied warranties. The user's exclusive remedy and Shin-Etsu Silicones, Inc.'s sole liability is limited to refund of the price or replacement of any product shown to be otherwise than as warranted. Shin-Etsu Silicones, Inc. will not be liable for incidental or consequential damages of any kind. Suggestions of uses should not be taken as inducements to infringe any patents.


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