Tranny pan install

I use the rubber ones with a thin film of red RTV on both sides and never had a leak problem.
I also have a sheetmetal screw in the right front corner of the pan for draining it, and I put the screw back in and a little silicone around the screw shaft inside the pan before I put it back on.
Also never leaked. (cleaned and dryed first of course)

Next time it comes off it's getting a real drain plug and the reusable gasket though.