What kinda glue is used on back of inspection lid

Just get some single sided pile off rubber tape from 3M no glue is used it is a gasket helps to keep water out of the cabin

 

I use some of the old fashioned contact cement. The kind they use to stick down counter top laminates. I say "old fashion" because only the really smelly caustic stuff works. I get it from a local building materials supply (haven't checked with the Home Depot, or Lowes type stores).

There's some "'new" IDK, "user friendly" or "environmentally safe" stuff now that never seems to work as well for me. I've used it inside some upholstery issues in cars I build. Seems to hold up well to the heat. Just have to get the surfaces super clean first.
Just my .02 Good Luck!