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Thanks for your patience and asking your question today, you may use the Sil-Poxy© Silicone Adhesive to create the bond between the silicone and plastic surfaces. Per description:
Sil-Poxy© is a one component adhesive made specifically for bonding RTV silicone rubber to silicone rubber and other substrates including some plastics (urethane), plasters/ceramics, fabrics, etc. Sil-Poxy© will work with tin or platinum-cure silicones and provides a strong, flexible bond between silicone parts with high elongation. Sil-Poxy© can be used repairing torn silicone rubber molds. Other applications include bonding silicone for prosthetics and animatronics.
Hope that helps, have a look and let me know how it goes, thanks.
Thanks for your reply. The product only works with urethane plastics. I need ABS plastic adhesive that works with silicone as well. Thank you.
Thanks for the clarification Steve, may try this stuff called Amazing Goop that really sticks to about anything and has rigid to flexible tubes available.
reference > http://www.naturalhandyman.com/iip/infadh/infgoo.html