[miamicuse]

Do you have other leaks as well? I see the subfloor seems to be rotted around the drain, is there an active leak around the drain?

 

[miamicuse]

What is the longevity of these things, is it going to fail in a few years or is it considered a permanent repair?

It's a stainless steel braided plastic hose. Inside is a plastic hose that needs the physical protection of the metal braided sleeve.

I wouldn't use them for as "permenant" replacement but they may last a long time.

Here is what I would do. If you want a fix and once done not worry about it for a long time, don't use this. Do a PEX repair or copper repair.

However, if you think the other joints are questionable and something else may break in 3 months. and you are considering redoing that whole mess, then use it as a temp stop gap.

Bear in mind these flex hoses are use also for fixture supplies like dishwashers, refrigerator icemaker lines, washing machine hoses etc...and the idea is that when you do replace those fixtures, the hoses will be replaced at the same time. In our state when you replace say a washing machine and the company delivers a new washing machine they provide the hookup, however if you do not buy new hot and cold hoses and ask them to use the old hoses they will refuse the hookup. They cannot legally use old hoses where I am.

 

[miamicuse]

There may be another option to do this "Flex" approach.

Falcon (of Rectorseal) makes a corrugated flex stainless steel line in various sizes. I actually prefer that over the steel braided ones for many water applications. They are used in tanked and tankless water heater connections so I think it has a higher temp rating (although I couldn't find the specs doing a quick glance).

1/2" ID Water Connector

Keep your water connection secure and leak-proof with RectorSeal's Super-Flex stainless steel water connectors. Featuring a full 1/2" ID Water Connector, these high flow and durable connectors are perfect for demanding environments requiring efficient and

rectorseal.com

The issue is most of these flex lines use a FIP connection at the ends so not a quick push fit like a Sharkbite, BUT, you can always buy two Sharkbite male adapter to attach to each end, and make it into a stainless steel corrugated line with quick connections. These lines are available in 12", 16", 18", 24" etc...so if you think the bent angle is too much for the length you have, get a longer one, you can even do a 270 degree loop.

 

[miamicuse]

Like Eplumber stated, type M copper is thinnest.