Trap Adapter Cap Leak

[E-man]

I have a brass desanco fitting into a cast iron stub-out.
An ABS elbow fits into the desanco with a nut and flange on the other end.
The brass desanco cap has a crushed seal (part of the cap) with a hole in it.
The plastic elbow will not move; its stuck.
Are these glued in place or what keeps it rigid?
No way to remove and replace the cap.
Should I try silicone rubber in the cap?
or should I cut off the elbow and try to remove the remaining ABS so it can be replaced?
or should I cut off the elbow and use a Fernco coupling?

Here are some photos:

In the mirror, you can see a hole in the seal/washer.

[Tom Sawyer]

Grab hold of it and twist and pull. don't be a girlie man either.

[hj]

quote; No way to remove and replace the cap. YES THERE IS
Should I try silicone rubber in the cap? ABSOLUTELY NOT
or should I cut off the elbow and try to remove the remaining ABS so it can be replaced? IF NECESSARY
or should I cut off the elbow and use a Fernco coupling? NEVER


All I see is a slip nut with a hardened washer on a piece of plastic SLIPPED into the DeSanko. There are lots of ways to remove the plastic tubing, the usual one is to just twist it and pull it out.

[E-man]

Thanks, HJ and Tom S.

Twist & pull is not working. I can just barely reach it from the front of the cabinet to pull, but can only twist with wrists. With my head and shoulders in the cabinet, I can twist a bit, but not pull and my back complains. I wonder if this tube could have been glued in place? Would you advise attempting to remove the brass adapter from the iron stub? (That could be glued as well!) I have two of these set-ups and they both leak.

[jadnashua]

You can try sticking the handle of a long screwdriver up that trap arm going into the Desanko and use it as a lever. It is not glued in place, or at least it's not designed to be glued in place. One never knows what some people might do, though. Tubular fittings rely on the tapered gasket being wedged evenly against the outside of the pipe and making the seal to the fitting on the outside. The nut gives you the mechanical force to jam it in there and then hold it.

[cacher_chick]

There is no "glue" for installing ABS to CI or the trap adapter. If you can't pull out the ABS by itself, you could unscrew the trap adapter and then pull it and the ABS out.