let the sealer dry - this may take a couple of weeks
RTV, as everyone probably already knows, stands for Room Temperature Vulcanization, but many (including myself) never learned why some RTV's take so long to cure or to set up.
The truth I learned at a free Permatex seminar several years ago is that RTV sealants require HUMIDITY to set up. This explains why it sometimes seems to take forever, or why you got a leak when you let it set up what you thought to be long enough. (also a promotion for using their "Right Stuff" product line, which has a thicker unset 'gel')
Arid climates such as Arizona and Las Vegas are not the only "climates" because if we are air conditioned or heated, there is also a risk of low or no humidity. (think about it). This really made sense to me. I began using this RTV in the early 80's in Palm Springs (arid) area. I had a few times I KNEW i didn't error an assembly and yet I had a leak.
If you want ordinary RTV's to set up faster, create HUMIDITY (not water, but moisure in the air) around your project.
I'm always learning, I learned this only because I went for the FREE steak dinner offered to attend the seminar. I really thought I knew enough about sealers, after all I was factory trained by General Motors in the mid-80's, justifying my "know-it-all" mentality
Richard