My house was built around 1965 or so and has a washer drain pipe that is about 36" long.last nite my wife goes down to laundry room to take clothes out of washer and there is a small puddle of water on floor,couldnt figure out what caused it until she washed another load and i watched water come out around where pipe meets stack in floor.i tried to wiggle to see how loose it is and couldnot get it to budge.can someone please tell me what kind of material was possibly used to seal the connection?and what do i use to reseal and how to get it out ? Thanks