- Dec 26, 1999
- 25,074
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I'm looking for an alternative around here, or at least a place to buy it (I wouldn't know where to start looking), but is this stuff kinda like the putty you can use to seal cracked pipes? I've seen this gray putty that dries up very hard, kinda like an epoxy I think. Can anyone point me in the right direction? I need something to seal up a flange that's welded to a pipe, I just need to seal up any pinhole leaks I might have.