Quote:
Originally Posted by Zeke
The U-channel is for putty. For installation you move the gland nuts forward to expose just enough thread for the finish nut/washer/putty assembly. On the back there should be a brass flat washer between the bgand nut and the back of the sink. Also there would be a fiber washer directly against the cast iron back since it's not smooth.
Rubber o-rings work too, but they don't last forever and can stain. You need to buy good ones from a plumbing supply that won't dry out and crack. I see a lot of red ones on old work.
The idea of using silicone grease is good with rubber because it can bunch up while cinching down.
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Thanks lots of good info in your post.
It sounds like I need a couple of fiber washers and bread washers.