Trunk rubber seal - 74 Duster

Hello!
I ordered a rubber seal for my trunk. How to I get the seal to stick? Do it need to use some kind of adhesive?

I thought it would just stick on. But it doesn't not. I was talking to someone today that said the trunk seals usually come with some glue of some kind.

Also he said the trunk seal will cut down on the smell of fumes in my cabin???

Any idea?
Thanks!