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So far I've used a manual crimping tool only on a few lead-free stop-valves, where I bought press-style valves because of the possibility of overheating the valve when soldering and damaging the seals.

None of my crimps and none of those I've seen look like the one I have highlighted in this photo, which is taken from an online Seller's listing. There's no text associated with the photo to explain it. Isn't that crimp mangled?

press fittings crimp

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  • Just a guess(probably a bad one) but maybe they only show the good side. Imagine fitting does need a crimp to seal and a crimp usually deforms.
    – crip659
    Nov 19, 2021 at 18:15

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