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My concern with the outside clamping style is that if water/waste is sitting in the space between the cast iron and the pipe exterior (sitting above the gasket) that gravity wants to make it seep down past the gasket--and then into the floor/ceiling space. With the inside discharge style...

Do you have any opinions about the Twist-N-Set and the PushTite? Do you consider them "quality" long-term solutions? Or do you think that the original outside clamping style is more robust? And is my concern about seepage past the gasket on the outside clamping style of any merit, or is that...

I'm working on an upstairs toilet in an old house that originally had a lead closet bend. A plumber replaced the lead bend with a 4" cast iron pipe, cutting the vertical part shorter because there was tight clearance below the floor to a notch in a joist. They installed an outside clamping cast...