There Has Got To Be A Better Way

kane co plumber

4" cast iron sleeved through the foundation, cast iron Tee on it's back picking up the vertical and several other fixtures, from the sleeved hub to the spigot end of tee there is a push gasket approx 50 years old. The job was just loads of fun, but it was bid right so the hard work aint so bad, the problem is of late I have been running into these push gaskets that seem to be as tight as a caulked joint and no matter how much i pull on them they won't budge. So I go at it like a caulked joint and whip out a cold chisel and hammer but since it's rubber there is give when I strike the cold chisel, 45 min later I am able to finally start piping off my soil adapter. There has got to be a more efficient way!

Bill

Never had to deal with this before, but if I did and run into that, I think I would try my torch and heat it up some, maybe make the rubber softer. Or possibly some WD40?

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kane co plumber

I tried the torch but it sends out the nastiest smell and black smoke, if it was a complete remodel id probably just deal with the smell but the customers where home on this repair and the WD got me no where

KillerToiletSpider

Drill about fifty 1/8" holes in the gasket, all the way around, the old style gaskets from the fifties had to be assembled with a soil puller, they could not be pushed with a bar.

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A flush is better than a full house.

kane co plumber

Does that allow you to pull the fitting out whole?

KillerToiletSpider

Yes, but you have to work it up and down and back and forth for awhile. Drilling the holes allows the rubber to displace somewhere.

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A flush is better than a full house.

Putty Truck

We used to break the hub with soil cutters or a c.i. sawzall blade.

KillerToiletSpider

He's trying to save the hub to re-use it.

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A flush is better than a full house.

Putty Truck

yikes.

whatever.

KillerToiletSpider

The standard construction for tract homes here for years has been a 4x5 single hub laid through the foundation, and the sewer connection outside was made to that, most of the time the hub is all that is exposed on the inside, so you have to preserve the hub as a tie in point. It is not normal for that to be a gasketed joint, but out in the burbs it wouldn't surprise me.

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A flush is better than a full house.

masterk

Cut the pipe or fitting off flush with the hub. Grinder or C. I. sawzall blade.
Then take a C. I. sawzall blade and cut the piece that's in the hub from the inside out in 2 place's. Pop it out with a flat head screw driver. 10 minutes start to finish.

Teetorbilt

On c.i., I like an air hammer. A little loud but not for long.

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You can't solve you're problems with the same level of thinking that created the problems.

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Grumpyplumber

Day late & dollar short here, but thats exactly what I do, both on resilient gaskets & lead/oakum.
Waaaayy too time consuming to try to work the piece out, unless circumstance won't allow it.