WACKER SilGel® 612 EH A/B

WACKER SilGel® 612 EH A/B is a pourable, addition-curing RTV-2 silicone rubber. WACKER SilGel® 612 EH A/B is a modification of WACKER SilGel® 612 with higher hardness and reactivity.


  • two-part, 1 : 1 mixing ratio
  • rapid cure
  • low hardness (silicone gel)

encapsulation of electronic components

The curing time is highly dependent on temperature, size and heat sink properties
of the component being potted.

All surfaces must be clean and free of contaminants
that will inhibit the cure of WACKER SilGel® 612 EH.
Examples of inhibiting contaminants are sulfur
containing materials, plasticizers, urethanes, amine
containing materials and organometallic compounds –
especially organotin compounds.
If a substrate’s ability to inhibit cure is unknown, a
small-scale test should be run to determine

Only components A and B with the same lot number
may be processed together!

Component B of WACKER SilGel® 612 EH contains
the platinum catalyst, component A the crosslinker.
Even traces of the platinum catalyst may cause gelling
of the component containing the crosslinker.
To eliminate any air introduced during dispensing or
trapped under components or devices a vacuum encapsulation
is recommended.


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)

How can we help you?

  • Do you need help in choosing a product or do you require technical support? If so, please contact our experts.
Ask a question


My media

My favorites

My products