DON'T USE SILICONE! you'll be sorry if you do. go to lowes, or home depot, buy ABS cement and a piece of pipe,a coupling, and a union. do the job right you wont be sorry. I had the same thing happen to me while on the road. the yo yo who installed the pipe in the first place didn't use glue. you just have to suck it up. use the braile method if you have to and use plenty of cement, its not likely anybody will see it if it don't leak anymore. If you cant do it yourself pay someone who can. youll be happy if you do.
