Hello

I recently orderd a 1 watt high power LED with adapter. The website said that there would be adhesive on the back of the light, and there was not. I intend to run this light for a long periods of time, and I understand they may get very hot, which is why it has a heat sync on the back, so I am wondering; what is a safe, non flamable alternative for the missing adhesive? I am currently using Gorrila tape for the purposes of testing it, but I don't know if it's safe for long term use (4-6 hours). Please help.

Vinnie