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this post was submitted on 06 May 2024
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What is this thing?
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Let us help you identify that mysterious object you’ve found.
Currently in CHALLENGE mode: If you've got something obscure knocking about, post a picture, and let's see how we do. Please prefix such posts with "CHALLENGE:" so we know we've got a fighting chance.
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No problem, I'm just glad all that time I spent memorizing the McMaster-Carr catalog finally came in handy!
The cylinders are sealed units, so they're safe to handle even after beating the crap out of them. The danger happens when people decide to repair a failing seal or leak and try to open the cylinder itself to get at the piston head - usually with a hacksaw....