A repair product that really adheres to rubber??
I've used black GE silicone to cover rubber things, but now that I have an old motorcycle from 1969, there are a lot of rubber parts which need something better. For example there is a rubber bumper** underneath the gas tank which has a lot of short "cuts" in it (they weren't cut by anyone though). All the cuts run parallel so that if you pull a bit, all the cuts open up.
I need something that will really stick to the rubber, so that when there is some stress on it, the patch will resist the stretch. I don't think the silicone really adheres.
But it probably should be flexible too. Maybe. Otherwise the orginal rubber will (will it?) stretch and come away from the glue, and otherwise, when the original rubber is pushed on, it won't bend where the glue is, will have to bend more right next to that, and will start tearing there. I can't get most of these parts. Others are both left and right air intake between the air cleaner and something else. And I'm sure I'll find more. And there are other projects where I've wanted something like this.