In the process of replacing my S-trap in a very old summer camp, the 1-1/4 brass and chrome tubing that the drain consists of came loose where it goes down into a joint flush with the wood floor. (Vibrations from sawing it partway up.)Looks like a lead joint and lead is now cracked. Pic attached. No access under house and don't want to use any heat. How can I seal and stabilize? Thought about a sealing caulk that adheres to lead, etc. Two best I read about are CT1 and Adiseal, which I can't find in US. Any advice welcome. Thanks.