hey, there are a lots of rubber material as soft and hard. you must be knowing what is hardness of rubber you need.
Bright
Sr.Project Manager&GM
HT-MOLDS
www.ht-molds.com
I think you can make a rapid prototype mold first. if that is okay, then you consider make a tool of production.
Bright
Sr.Project Manager&GM
HT-MOLDS
www.ht-molds.com