Hi all. I've learned a lot just lurking on this forum but I ran into something I haven't seen before.
I'm tearing out our bath tub and installing a shower in it's place. The drain system is copper but the trap appears to be cast brass. My question concerns the union in the center of the trap. There was no washer or other type of seal at the joint when I took it apart. Is this merely a friction seal? I plan on continuing to use this trap. Can I just clean up the joint with a wire brush and reassemble? Is there some sort of sealant I could put there?
Thanks for the help in advance!!