Tim Downie wrote:
I have a silcone rubber "dog tag" that I'd like to put my name and phone
number on for ID purposes should I drop dead during a run. (Ever the
optimist ;-))

On one side its got moulded or perhaps laser engraved text but the other is
flat. Is there anything indelible that will work on silcone rubber or is in
possible to get it "engraved"?

Black silicone sealant.