hinge for tounge box

I'm wondering what type of hinge and how most of you with home built tounge boxes build your lids and make them water tight. My box is 36 across back 12 front to back 27 across front and 18 deep. It will contain battery, battery charger and 11lb bottle.
Any imformation will be appreciated.
dewayne
Any imformation will be appreciated.
dewayne
