this post was submitted on 12 Aug 2023
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identify unknown objects

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Welcome to r/whatisthis, a subreddit for identifying objects of unknown make, type, or origin. If you have something and you don't know what it...

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Moving into new place and I find this (i.redd.it)
submitted 2 years ago by [email protected] to c/[email protected]
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The original was posted on /r/whatisthis by /u/CollinWorksOut on 2023-08-11 21:44:50.

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[–] janus2 1 points 2 years ago

my first thought is that it's some kind of foam sealant, but definitely get someone qualified to check and make sure it's not something hazardous