Is tearout OK when using foam core PVC for DWV applications

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hbarkley

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I'm relocating my toilet, and as such I've coupled a new 4ft length of 3" PVC "cell-core" DWV pipe to the old line. In cutting out the new length of pipe, I was a bit too quick with the mitre saw and I noticed tearout on the inside of the cut. Parts of the PVC lining chipped out exposing the foam core. This section of pipe goes inside a 3" coupling and will be exposed to waste from the toilet.

Here's the image:

hbarkley-01.jpg


Is the exposed core expected to hold up against water and waste from a toilet?
Is it water proof? Or do I need to make a run to the big box store and buy another section of pipe and re-cut? Is there a best practice for fixing something like this?

Given there's a lining around the core, I'm assuming the core shouldn't be exposed. On the other hand, I'd be surprised if a simple error during cutting could so easily cause a pipe failure.
 
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