SEMICOSIL® 961 TC A/B is a shear-thinning, easy-dispensing, non-slump, addition-curing, two part silicone rubber that cures at room temperature to a soft and tacky rubber with excellent thermal conductivity.


  • Gap filler, thermal conductivity 2.3 W/mK
  • Two-part, RT curing
  •  Constant properties from –50 °C to 130 °C
  •  Low stress, soft and tacky
  • D4-D8 < 350 ppm

Interface material for heat sink applications for the electronics industry

The platinum catalyst is contained in component A.
Only components A and B with the same lot number may be processed together!


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.

Sales and support

Wacker Chemical Corporation
3301 Sutton Road
Adrian, MI 49221-9397
United States
+1  888  922-5374 (Phone)

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