joint leak

I have a leak at the connection of were this sewer PVC pipe connects via a rubber connector to a lead (?) pipe the goes into my concrete garage floor. What can I use and how can I seal this myself. I was hoping to use a product without taking this apart and redoing it since I am not versed in...

Help please!! Found a leak in the water supply pipe joint (cpvc to copper), leaking into the interior of wall behind the shower panel. Please see video of leaking joint here: https://drive.google.com/open?id=1RtvFQoFV0uG6X5tSGsVSaXjCxsGcshRi I should add the leak has been stopped. But I am...